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.

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A099988 Bisection of lucky numbers, A000959.

Original entry on oeis.org

1, 7, 13, 21, 31, 37, 49, 63, 69, 75, 87, 99, 111, 127, 133, 141, 159, 169, 189, 195, 205, 219, 231, 237, 259, 267, 283, 289, 303, 319, 327, 339, 357, 367, 391, 399, 415, 427, 433, 463, 477, 487, 495, 517, 529, 537, 553, 577, 583, 601, 615, 621, 639, 645, 655
Offset: 1

Views

Author

N. J. A. Sloane, Nov 20 2004

Keywords

Crossrefs

Cf. A099989.

Programs

  • Mathematica
    lst = Range[1, 678, 2]; i = 2; While[ i <= (len = Length@lst) && (k = lst[[i]]) <= len, lst = Drop[lst, {k, len, k}]; i++ ]; Take[lst, {1, Length@lst, 2}] (* Robert G. Wilson v, May 12 2006 *)

Extensions

More terms from Robert G. Wilson v, May 12 2006

A099989 Bisection of lucky numbers, A000959.

Original entry on oeis.org

3, 9, 15, 25, 33, 43, 51, 67, 73, 79, 93, 105, 115, 129, 135, 151, 163, 171, 193, 201, 211, 223, 235, 241, 261, 273, 285, 297, 307, 321, 331, 349, 361, 385, 393, 409, 421, 429, 451, 475, 483, 489, 511, 519, 535, 541, 559, 579, 591, 613, 619, 631, 643, 651, 673
Offset: 1

Views

Author

N. J. A. Sloane, Nov 20 2004

Keywords

Crossrefs

Cf. A099988.

Programs

  • Mathematica
    lst = Range[1, 684, 2]; i = 2; While[ i <= (len = Length@lst) && (k = lst[[i]]) <= len, lst = Drop[lst, {k, len, k}]; i++ ]; Take[lst, {2, Length@lst, 2}] (* Robert G. Wilson v, May 12 2006 *)

Extensions

More terms from Robert G. Wilson v, May 12 2006

A123593 Inverse binomial transform of lucky numbers (A000959).

Original entry on oeis.org

1, 2, 2, -4, 8, -16, 34, -74, 158, -328, 668, -1344, 2666, -5176, 9786, -18080, 33160, -62046, 121924, -254864, 559442, -1253358, 2788712, -6050598, 12678984, -25562296, 49559770, -92527702, 166783286, -291322324, 495620212, -827188226, 1368439702, -2276801082, 3882595072
Offset: 0

Views

Author

N. J. A. Sloane, Nov 27 2006

Keywords

Links

A137165 Lucky numbers (A000959) which are congruent to 1 mod 3.

Original entry on oeis.org

1, 7, 13, 25, 31, 37, 43, 49, 67, 73, 79, 115, 127, 133, 151, 163, 169, 193, 205, 211, 223, 235, 241, 259, 283, 289, 307, 319, 331, 349, 361, 367, 385, 391, 409, 415, 421, 427, 433, 451, 463, 475, 487, 511, 517, 529, 535, 541, 553, 559, 577, 583, 601, 613, 619, 631, 643
Offset: 1

Views

Author

N. J. A. Sloane, Mar 07 2008

Keywords

Comments

Equally, lucky numbers (A000959) which are congruent to 1 mod 6. (They are the same, since the first sieve step removes the even numbers. - Don Reble, Jan 12 2009)

Links

Crossrefs

Intersection of A000959 and A016777.

Extensions

Edited by N. J. A. Sloane, Jan 12 2009 at the suggestion of R. J. Mathar

A137182 Lucky numbers (A000959) which are congruent to 0 mod 7.

Original entry on oeis.org

7, 21, 49, 63, 105, 133, 189, 231, 259, 273, 357, 385, 399, 427, 483, 511, 553, 651, 679, 693, 735, 777, 805, 819, 903, 931, 1029, 1057, 1155, 1183, 1197, 1281, 1309, 1323, 1365, 1435, 1491, 1519, 1533, 1575, 1645, 1659, 1701, 1771, 1827, 1869, 1995, 2023, 2065
Offset: 1

Views

Author

N. J. A. Sloane, Mar 07 2008

Keywords

Links

Crossrefs

Intersection of A000959 and A008589.

A137183 Lucky numbers (A000959) which are congruent to 1 mod 7.

Original entry on oeis.org

1, 15, 43, 99, 127, 141, 169, 211, 267, 393, 421, 463, 477, 519, 631, 645, 673, 729, 841, 855, 883, 897, 925, 981, 1009, 1023, 1093, 1107, 1219, 1233, 1261, 1275, 1303, 1387, 1401, 1471, 1485, 1597, 1611, 1639, 1723, 1737, 1765, 1933, 2031, 2059, 2115, 2283
Offset: 1

Views

Author

N. J. A. Sloane, Mar 07 2008

Keywords

Links

Crossrefs

Intersection of A000959 and A016993.

A137184 Lucky numbers (A000959) which are congruent to 2 mod 7.

Original entry on oeis.org

9, 37, 51, 79, 93, 135, 163, 205, 219, 261, 289, 303, 331, 415, 429, 541, 583, 639, 723, 933, 961, 975, 1087, 1101, 1339, 1395, 1563, 1675, 1731, 1773, 1801, 1857, 1899, 1941, 1983, 2053, 2067, 2095, 2221, 2277, 2403, 2445, 2473, 2557, 2571, 2599, 2697, 2725
Offset: 1

Views

Author

N. J. A. Sloane, Mar 07 2008

Keywords

Links

Crossrefs

Intersection of A000959 and A017005.

A137186 Lucky numbers (A000959) which are congruent to 4 mod 7.

Original entry on oeis.org

25, 67, 151, 193, 235, 319, 361, 487, 529, 613, 655, 739, 781, 823, 991, 1117, 1201, 1285, 1369, 1495, 1579, 1663, 1705, 1831, 1915, 2083, 2125, 2209, 2251, 2335, 2419, 2461, 2545, 2587, 2671, 2755, 2797, 2923, 3007, 3049, 3091, 3133, 3175, 3259, 3301, 3427
Offset: 1

Views

Author

N. J. A. Sloane, Mar 07 2008

Keywords

Links

Crossrefs

Intersection of A000959 and A017029.

A137187 Lucky numbers (A000959) which are congruent to 5 mod 7.

Original entry on oeis.org

33, 75, 159, 201, 285, 327, 495, 537, 579, 621, 831, 873, 957, 1041, 1167, 1209, 1251, 1419, 1503, 1545, 1587, 1797, 1839, 1923, 1965, 2133, 2217, 2301, 2343, 2427, 2511, 2763, 2973, 3099, 3183, 3351, 3477, 3603, 3687, 3771, 3897, 3981, 4023, 4107, 4443
Offset: 1

Views

Author

N. J. A. Sloane, Mar 07 2008

Keywords

Links

Crossrefs

Intersection of A000959 and A017041.

A137188 Lucky numbers (A000959) which are congruent to 6 mod 7.

Original entry on oeis.org

13, 69, 111, 195, 223, 237, 307, 321, 349, 391, 433, 475, 489, 517, 559, 601, 615, 643, 685, 699, 727, 741, 769, 867, 895, 937, 979, 993, 1021, 1105, 1147, 1189, 1203, 1231, 1245, 1329, 1357, 1441, 1455, 1497, 1567, 1693, 1749, 1777, 1819, 1833, 1945, 1959
Offset: 1

Views

Author

N. J. A. Sloane, Mar 07 2008

Keywords

Links

Crossrefs

Intersection of A000959 and A017053.
Previous Showing 31-40 of 310 results. Next

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