cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

Showing 1-10 of 11 results. Next

A213179 Numbers k such that 2*k is a partition number.

Original entry on oeis.org

1, 11, 15, 21, 28, 88, 245, 396, 501, 979, 1218, 1505, 1859, 2802, 3421, 6155, 18669, 26587, 44567, 52779, 62377, 102113, 225638, 307077, 357610, 415910, 650078, 870815, 1006279, 1161760, 2043984, 3544750, 4059132, 6066082, 6924325, 7898238, 13271830
Offset: 1

Views

Author

Omar E. Pol, Feb 27 2013

Keywords

Examples

			11 is in the sequence because 2*11 = 22 and 22 is a partition number: p(8) = A000041(8) = 22.

Crossrefs

Cf. A000041, A052001, A213365, A216258, A217725, A217726, A222175, A222178, A222179, A225317, A225323.

Programs

  • Mathematica
    Select[PartitionsP[Range@200]/2, IntegerQ] (* Giovanni Resta, May 05 2013 *)

Formula

a(n) = A052001(n)/2.

A213365 Numbers k such that 3*k is a partition number.

Original entry on oeis.org

1, 5, 10, 14, 45, 77, 99, 209, 264, 334, 525, 812, 1868, 2783, 3381, 4961, 10395, 12446, 14861, 21087, 35186, 49091, 79981, 93863, 109977, 204718, 373835, 501833, 1029245, 1362656, 1565735, 2706088, 5265492, 14702703, 44410310, 80421793, 101600455, 128092112, 143716463, 226634401, 354714817, 947313500, 1054375784
Offset: 1

Views

Author

Omar E. Pol, Jan 08 2013

Keywords

Comments

Is this sequence infinite? Klarreich writes: no one has proved whether there are infinitely many partition numbers divisible by 3 (see Jonathan Vos Post's comment in A000041 and A087183). - Omar E. Pol, Jan 14 2014

Links

Crossrefs

Cf. A000041, A087183, A213179, A216258, A217725, A217726, A222175, A222178, A222179, A225317, A225323.

Programs

  • Mathematica
    Select[PartitionsP[Range[300]], Mod[#, 3] == 0 &]/3 (* Omar E. Pol, May 07 2013 *)

Formula

a(n) = A087183(n)/3.

Extensions

a(35)-a(43) from R. J. Mathar, May 05 2013

A216258 Numbers n such that 4n is a partition number.

Original entry on oeis.org

14, 44, 198, 609, 1401, 112819, 178805, 207955, 325039, 580880, 1021992, 1772375, 2029566, 3033041, 3949119, 6635915, 23167430, 29528576, 37549534, 47642323, 96069084, 120875711, 135486560, 190250539, 212844157, 297227062, 331927519, 461087390, 572830228
Offset: 1

Views

Author

Omar E. Pol, May 05 2013

Keywords

Examples

			14 is in the sequence because 4*14 = 56 and 56 is a partition number: p(11) = A000041(11) = 56.

Crossrefs

Cf. A000041, A213179, A213365, A217725, A217726, A222175, A222178, A222179, A225317, A225323, A225324.

Programs

  • Mathematica
    Select[PartitionsP[Range[300]], Mod[#, 4] == 0 &]/4 (* T. D. Noe, May 05 2013 *)

Formula

a(j) = A225324(j)/4.

Extensions

a(9)-a(29) from R. J. Mathar, May 05 2013

A217725 Numbers n such that 5n is a partition number.

Original entry on oeis.org

1, 3, 6, 27, 77, 98, 251, 315, 602, 913, 2462, 5203, 6237, 15035, 34705, 77231, 143044, 166364, 224301, 348326, 464704, 617547, 710869, 939441, 1417900, 2769730, 4101251, 5308732, 9999185, 18533944, 26646186, 33845975, 54249790, 60960273, 108389248
Offset: 1

Views

Author

Omar E. Pol, May 05 2013

Keywords

Examples

			3 is in the sequence because 5*3 = 15 and 15 is a partition number: p(7) = A000041(7) = 15.

Crossrefs

Cf. A000041, A213179, A213365, A216258, A217726, A222175, A222178, A222179, A225317, A225323, A225325.

Programs

  • Mathematica
    Select[PartitionsP[Range[300]], Mod[#, 5] == 0 &]/5 (* T. D. Noe, May 05 2013 *)

Formula

a(j) = A225325(j)/5.

Extensions

a(9)-a(35) from R. J. Mathar, May 05 2013

A217726 Numbers n such that 6n is a partition number.

Original entry on oeis.org

5, 7, 132, 167, 406, 934, 6223, 17593, 102359, 681328, 1353044, 2632746, 22205155, 64046056, 473656750, 527187892, 805878645, 1224438252, 3073382220, 5064778663, 7510104097, 17906359911, 23799832655, 114159565156, 303450183442, 557560997283, 662166504898
Offset: 1

Views

Author

Omar E. Pol, May 05 2013

Keywords

Examples

			5 is in the sequence because 6*5 = 30 and 30 is a partition number: p(9) = A000041(9) = 30.

Crossrefs

Cf. A000041, A213179, A213365, A216258, A217725, A222175, A222178, A222179, A225317, A225323, A225326.

Programs

  • Mathematica
    Select[PartitionsP[Range[300]], Mod[#, 6] == 0 &]/6 (* T. D. Noe, May 05 2013 *)

Formula

a(j) = A225326(j)/6.

Extensions

a(9)-a(27) from T. D. Noe, May 05 2013

A222175 Numbers n such that 7n is a partition number.

Original entry on oeis.org

1, 6, 8, 11, 33, 55, 70, 225, 348, 430, 1449, 3091, 4455, 5334, 6369, 17822, 21039, 40227, 47133, 55165, 64468, 160215, 441105, 1159752, 1327013, 2929465, 3334067, 7142275, 16873472, 19032990, 38749850, 86737678, 97129029, 189672868, 405991500, 451875336, 852077072, 1756048833, 2152268305, 3558408287, 4341238854, 7098041203
Offset: 1

Views

Author

Omar E. Pol, May 05 2013

Keywords

Examples

			6 is in the sequence because 7*6 = 42 and 42 is a partition number: p(10) = A000041(10) = 42.

Crossrefs

Cf. A000041, A213179, A213365, A216258, A217725, A217726, A222178, A222179, A225317, A225323, A225327.

Programs

  • Mathematica
    Select[PartitionsP[Range[300]], Mod[#, 7] == 0 &]/7 (* T. D. Noe, May 05 2013 *)

Formula

a(j) = A225327(j)/7.

Extensions

a(9)-a(42) from R. J. Mathar, May 05 2013

A222178 Numbers n such that 8n is a partition number.

Original entry on oeis.org

7, 22, 99, 290440, 510996, 1014783, 11583715, 14764288, 18774767, 48034542, 67743280, 148613531, 230543695, 286415114, 395390919, 543884825, 671414425, 745567438, 918328689, 1251947710, 1387205627, 2083836151, 2305036665, 4628419400, 7544584160, 37673100256
Offset: 1

Views

Author

Omar E. Pol, May 05 2013

Keywords

Examples

			7 is in the sequence because 8*7 = 56 and 56 is a partition number: p(11) = A000041(11) = 56.

Crossrefs

Cf. A000041, A213179, A213365, A216258, A217725, A217726, A222175, A222179, A225317, A225323, A225358.

Programs

  • Mathematica
    Select[PartitionsP[Range@200]/8, IntegerQ] (* Giovanni Resta, May 05 2013 *)

Formula

a(j) = A225358(j)/8.

Extensions

a(5)-a(26) from Giovanni Resta, May 05 2013

A222179 Numbers n such that 9n is a partition number.

Original entry on oeis.org

15, 33, 88, 175, 1127, 3465, 7029, 36659, 1755164, 4900901, 537252430, 816292168, 1365815759, 2048921480, 11937573274, 14434878293, 17435497255, 27826547235, 169697066625, 371707331522, 405119159125, 800760189610, 23737435535625, 86561181062463, 100528900924040
Offset: 1

Views

Author

Omar E. Pol, May 05 2013

Keywords

Examples

			15 is in the sequence because 9*15 = 135 and 135 is a partition number: p(14) = A000041(14) = 135.

Crossrefs

Cf. A000041, A213179, A213365, A216258, A217725, A217726, A222175, A222178, A225317, A225323, A225360.

Programs

  • Mathematica
    Select[PartitionsP[Range[300]], Mod[#, 9] == 0 &]/9 (* T. D. Noe, May 05 2013 *)

Formula

a(j) = A225360(j)/9.

Extensions

a(6)-a(25) from R. J. Mathar, May 05 2013

A225323 Numbers n such that 11n is a partition number.

Original entry on oeis.org

1, 2, 7, 16, 21, 27, 35, 57, 72, 178, 338, 415, 622, 759, 1353, 1967, 2365, 2835, 4053, 4834, 5751, 15775, 18566, 21813, 25599, 35105, 47893, 65020, 75620, 101955, 118196, 158330, 490253, 644500, 738024, 1102924, 1636757, 1864205, 2121679, 2413060, 2742487, 3535243, 8424520, 10737664, 13654376, 27709215, 31120519
Offset: 1

Views

Author

Omar E. Pol, May 05 2013

Keywords

Examples

			2 is in the sequence because 11*2 = 22 and 22 is a partition number: p(8) = A000041(8) = 22.

Crossrefs

Cf. A000041, A027827, A213179, A213365, A216258, A217725, A217726, A222175, A222178, A222179, A225317, A225361.

Programs

  • Mathematica
    Select[PartitionsP[Range[100]], Mod[#, 11] == 0 &]/11 (* T. D. Noe, May 05 2013 *)

Formula

a(j) = A225361(j)/11.

Extensions

a(11)-a(47) from R. J. Mathar, May 05 2013

A127544 Partition numbers (A000041) which are multiples of 10 (A008592).

Original entry on oeis.org

30, 490, 3010, 12310, 715220, 831820, 1741630, 2323520, 7089500, 13848650, 26543660, 92669720, 133230930, 271248950, 541946240, 1844349560, 2841940500, 4351078600, 4835271870, 5371315400, 10015581680, 18440293320, 37027355200
Offset: 1

Views

Author

Zak Seidov, Apr 01 2007

Keywords

Comments

Intersection of A000041 and A008592.
Partition numbers of the form 10k. - Omar E. Pol, May 08 2013

Crossrefs

Cf. A000041, A052001, A008592, A087183.

Programs

  • Mathematica
    Select[Table[PartitionsP[n],{n,0,200}],Mod[ #,10]==0&]

Formula

a(n) = 10*A225317(n). - Omar E. Pol, May 08 2013

Extensions

Corrected by Omar E. Pol, May 05 2013
Showing 1-10 of 11 results. Next

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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