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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A119050 Numbers k such that the k-th triangular number contains only digits {0,2,3}.

Original entry on oeis.org

2, 24, 77, 215, 637, 802, 8002, 25815, 80002, 800002, 2158797, 8000002, 25768322, 66382562, 80000002, 800000002, 8000000002, 21596311362, 80000000002, 800000000002, 8000000000002, 80000000000002, 800000000000002
Offset: 1

Views

Author

Giovanni Resta, May 10 2006

Keywords

Crossrefs

Cf. A000217, A119049. See A119034 for a table of cross-references.

Programs

  • Magma
    [n: n in [1..2*10^7] | Set(Intseq(Binomial(n+1, 2))) subset [0, 2, 3]]; // Vincenzo Librandi, Oct 07 2015
  • Mathematica
    Select[Range[3 10^7], Complement[IntegerDigits[Binomial[# + 1, 2]], {0, 2, 3}] == {}&] (* Vincenzo Librandi,Oct 07 2015 *)

A119054 Numbers k such that the k-th triangular number contains only digits {0,2,6}.

Original entry on oeis.org

3, 11, 36, 363, 1095, 3640, 72396, 2097628, 1119484011, 11489670148, 200329741476, 666663663636, 6666633636651, 11508483829424, 203306006810436
Offset: 1

Views

Author

Giovanni Resta, May 10 2006

Keywords

Comments

No other terms below 1.4*10^20. - Max Alekseyev, Aug 26 2013

Crossrefs

Cf. A000217, A119053. See A119034 for a table of cross-references.

Programs

  • Magma
    [n: n in [1..4*10^6] | Set(Intseq(Binomial(n+1, 2))) subset [0, 2, 6]]; // Vincenzo Librandi, Dec 25 2015
  • Mathematica
    Select[Range[2 10^7], Complement[IntegerDigits[Binomial[# + 1, 2]], {0, 2, 6}] == {} &] (* Vincenzo Librandi, Dec 25 2015 *)

A119056 Numbers k such that the k-th triangular number contains only digits {0,2,8}.

Original entry on oeis.org

7, 40, 64, 400, 632, 1287, 4000, 40000, 126712, 209775, 400000, 646232, 663367, 4000000, 40000000, 75897600, 213645607, 400000000, 4000000000, 12713841912, 40000000000, 400000000000, 749506541784, 4000000000000, 20397451214712
Offset: 1

Views

Author

Giovanni Resta, May 10 2006

Keywords

Crossrefs

Cf. A000217, A119055. See A119034 for a table of cross-references.

A119058 Numbers k such that the k-th triangular number contains only digits {0,2,9}.

Original entry on oeis.org

44, 64656155, 429439844, 632914215, 21072266180
Offset: 1

Views

Author

Giovanni Resta, May 10 2006

Keywords

Comments

Next term must be greater than 1.4*10^20. - Max Alekseyev, Aug 14 2013

Crossrefs

Cf. A000217, A119057. See A119034 for a table of cross-references.

A119060 Numbers k such that the k-th triangular number contains only digits {0,3,4}.

Original entry on oeis.org

2, 24, 77, 82, 2624, 26242, 29442, 82877, 2840082, 82825117, 93091399, 774641122, 816508460, 9423378739, 81731319999, 246333119999, 2976590096077, 8164967169602
Offset: 1

Views

Author

Giovanni Resta, May 10 2006

Keywords

Comments

Next term exceeds 1.4*10^16.

Crossrefs

Cf. A000217, A119059. See A119034 for a table of cross-references.

A119062 Numbers k such that the k-th triangular number contains only digits {0,3,5}.

Original entry on oeis.org

2, 10, 24, 77, 100, 1000, 10000, 100000, 257100, 1000000, 2647829, 10000000, 10349399, 26657100, 100000000, 316340024, 775313489, 1000000000, 10000000000, 100000000000, 1000000000000, 1003347948924, 8403017712114
Offset: 1

Views

Author

Giovanni Resta, May 10 2006

Keywords

Crossrefs

Cf. A000217, A119061. See A119034 for a table of cross-references.

A119064 Numbers k such that the k-th triangular number contains only digits {0,3,6}.

Original entry on oeis.org

2, 3, 8, 11, 24, 35, 36, 77, 363, 816, 1095, 1122, 2571, 7788, 25704, 114920, 11281016, 35599539, 355057836, 11489128191, 258315170402, 852060600000, 1151781516003, 3559869761679, 25703436746877, 25704497685660
Offset: 1

Views

Author

Giovanni Resta, May 10 2006

Keywords

Crossrefs

Cf. A000217, A119063. See A119034 for a table of cross-references.

A119066 Numbers k such that the k-th triangular number contains only digits {0,3,7}.

Original entry on oeis.org

2, 24, 37, 77, 775, 3943940, 7844837, 124153399, 393193023940, 78406253666877, 256907649052235, 1240997802874797
Offset: 1

Views

Author

Giovanni Resta, May 10 2006

Keywords

Comments

Next term exceeds 1.4*10^16.

Crossrefs

Cf. A000217, A119065. See A119034 for a table of cross-references.

A119068 Numbers k such that the k-th triangular number contains only digits {0,3,8}.

Original entry on oeis.org

2, 24, 77, 126797, 12714624, 129079888464, 77885018846797, 4009565647007922, 40750555532000002
Offset: 1

Views

Author

Giovanni Resta, May 10 2006

Keywords

Comments

Next term exceeds 1.4*10^17.

Crossrefs

Cf. A000217, A119067. See A119034 for a table of cross-references.

Extensions

One more term from Max Alekseyev, Mar 09 2009

A119070 Numbers k such that the k-th triangular number contains only digits {0,3,9}.

Original entry on oeis.org

2, 24, 42, 44, 77, 260, 282, 824, 1364, 8835, 44517, 88419, 89375, 256917, 282842, 426600, 2603844, 14141435, 424287482, 894359435, 24629287602, 81351102024, 137064943244, 1371082295364, 2489711201364, 8870066515082
Offset: 1

Views

Author

Giovanni Resta, May 10 2006

Keywords

Crossrefs

Cf. A000217, A119069. See A119034 for a table of cross-references.
Previous Showing 11-20 of 109 results. Next