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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A119151 Numbers k such that the k-th triangular number contains only digits {1,8,9}.

Original entry on oeis.org

1, 13, 61, 133, 613, 1333, 1341, 1413, 1541, 4878, 13333, 61938, 133333, 141413, 616261, 619386, 631186, 1333333, 13333333, 133333333, 1333333333, 13333333333, 133333333333, 1279701683121, 1333333333333, 1959029769461
Offset: 1

Views

Author

Giovanni Resta, May 10 2006

Keywords

Links

Crossrefs

Cf. A000217, A119150. See A119034 for a table of cross-references.

A119153 Numbers k such that the k-th triangular number contains only digits {2,3,5}.

Original entry on oeis.org

2, 10, 22, 25, 102, 714, 2114, 2170, 2550, 21097, 671302, 258973177, 1023088777, 22460425354, 211297574645, 668630474213122229
Offset: 1

Views

Author

Giovanni Resta, May 10 2006

Keywords

Links

Crossrefs

Cf. A000217, A119152. See A119034 for a table of cross-references.

Extensions

a(16) from Tyler Busby, Mar 31 2023

A119155 Numbers k such that the k-th triangular number contains only digits {2,3,6}.

Original entry on oeis.org

2, 3, 8, 11, 36, 211, 816, 6816, 25948, 66816, 80791, 111948, 724323, 730251, 2127563, 8511948, 364234436, 80456475963, 81513466816, 2159924381188, 2554314912583, 3651400351272436
Offset: 1

Views

Author

Giovanni Resta, May 10 2006

Keywords

Comments

Next term exceeds 1.4*10^16.

Links

Crossrefs

Cf. A000217, A119154. See A119034 for a table of cross-references.

A119157 Numbers k such that the k-th triangular number contains only digits {2,3,8}.

Original entry on oeis.org

2, 7, 87, 1287, 881287, 21158087, 25800318712, 7535029241912
Offset: 1

Views

Author

Giovanni Resta, May 10 2006

Keywords

Comments

Next term exceeds 4.4*10^20.

Links

Crossrefs

Cf. A000217, A119156. See A119034 for a table of cross-references.

Extensions

Lower bound for the next term updated by Max Alekseyev, May 21 2009, Mar 05 2023

A119159 Numbers k such that the k-th triangular number contains only digits {2,4,5}.

Original entry on oeis.org

9, 10, 225, 714, 6714, 22114, 2119209, 2211449, 102523609, 942573334, 95336514049, 3333030289167658390
Offset: 1

Views

Author

Giovanni Resta, May 10 2006

Keywords

Comments

Next term exceeds 1.4*10^20.

Links

Crossrefs

Cf. A000217, A119158. See A119034 for a table of cross-references.

Extensions

a(12) from Max Alekseyev, Aug 19 2013

A119161 Numbers k such that the k-th triangular number contains only digits {2,4,6}.

Original entry on oeis.org

3, 11, 36, 923, 23076, 211963, 9656548, 35906663076, 9635790203866668, 35401826004387588
Offset: 1

Views

Author

Giovanni Resta, May 10 2006

Keywords

Comments

Next term exceeds 3.1*10^18.

Links

Crossrefs

Cf. A000217, A119160. See A119034 for a table of cross-references.

Extensions

a(10) from Max Alekseyev, Jun 16 2011

A119163 Numbers k such that the k-th triangular number contains only digits {2,4,8}.

Original entry on oeis.org

7, 312, 1287, 1297912, 7054712, 7521287, 2384302087
Offset: 1

Views

Author

Giovanni Resta, May 10 2006

Keywords

Comments

Next term exceeds 1.4*10^20. - Max Alekseyev, May 18 2025

Links

Crossrefs

Cf. A000217, A119162. See A119034 for a table of cross-references.

A119165 Numbers k such that the k-th triangular number contains only digits {2,5,6}.

Original entry on oeis.org

3, 10, 11, 36, 71, 105, 114, 230, 714, 2128, 3363, 10550, 32411, 73010, 2309210, 3648430, 10641950, 23045894, 33336636, 72479825, 111581563, 229156071, 36118284988, 730103037471, 22915594088989, 106039853513914
Offset: 1

Views

Author

Giovanni Resta, May 10 2006

Keywords

Links

Crossrefs

Cf. A000217, A119164. See A119034 for a table of cross-references.

A119167 Numbers k such that the k-th triangular number contains only digits {2,5,7}.

Original entry on oeis.org

10, 74, 714, 1074, 1070285, 2270474, 1206047449, 67189697949, 324723752049, 23346424812260967349
Offset: 1

Views

Author

Giovanni Resta, May 10 2006

Keywords

Links

Crossrefs

Cf. A000217, A119166. See A119034 for a table of cross-references.

Extensions

a(10) from Tyler Busby, Mar 31 2023

A119169 Numbers k such that the k-th triangular number contains only digits {2,5,8}.

Original entry on oeis.org

7, 10, 32, 714, 1025, 1287, 6712, 10849, 13285, 23885, 711129, 22595807, 22619825, 40641912, 715385610, 33343322745, 332431301950, 23785828913825, 32503094884196145
Offset: 1

Views

Author

Giovanni Resta, May 10 2006

Keywords

Links

Crossrefs

Cf. A000217, A119168. See A119034 for a table of cross-references.

Extensions

a(19) from Tyler Busby, Mar 31 2023
Previous Showing 61-70 of 109 results. Next

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

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