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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A119182 Triangular numbers composed of digits {3,4,5}.

Original entry on oeis.org

3, 45, 55, 435, 34453, 455535, 3355345, 3544453, 45453345, 334434453, 355444453, 3433345545, 4544333445, 5435334453, 35554444453, 44555453355, 3555544444453, 53443433535355, 355555444444453, 454555345444453, 5355435453444453, 35455445544444555
Offset: 1

Views

Author

Giovanni Resta, May 10 2006

Keywords

Links

Crossrefs

Cf. A000217, A053937, A119183. See A119033 for a table of cross-references.

Formula

a(n) = A000217(A119183(n)).

Extensions

a(21)-a(22) from Tyler Busby, Mar 24 2023

A119184 Triangular numbers composed of digits {3,4,6}.

Original entry on oeis.org

3, 6, 36, 66, 666, 333336, 3664664466, 66336663646, 3343646334464646, 334446636363634446, 346644344666643436, 3644434346644436366346, 4446663663333436343436, 664333446446364463633446, 436633343363366333434433646, 6336363664446634343634443466
Offset: 1

Views

Author

Giovanni Resta, May 10 2006

Keywords

Links

Crossrefs

Cf. A000217, A053939, A119185. See A119033 for a table of cross-references.

Formula

a(n) = A000217(A119185(n)). - Michel Marcus, Mar 15 2023

Extensions

a(15)-a(16) from Tyler Busby, Mar 15 2023

A119186 Triangular numbers composed of digits {3,5,6}.

Original entry on oeis.org

3, 6, 36, 55, 66, 666, 3655, 5356, 5565, 6555, 333336, 3635556, 5656566, 35536665, 56365653, 56663335, 63365653, 655636366, 53533355655, 55663663653, 533533653555, 555533363556, 6653355565366, 555665666566566, 35356355566555653, 653366333366663536656
Offset: 1

Views

Author

Giovanni Resta, May 10 2006

Keywords

Links

Crossrefs

Cf. A000217, A053945, A119187. See A119033 for a table of cross-references.

Programs

  • Mathematica
    Table[Select[FromDigits/@Tuples[{3,5,6},n],OddQ[Sqrt[8#+1]]&],{n,15}]//Flatten (* Harvey P. Dale, Aug 03 2021 *)

Formula

a(n) = A000217(A119187(n)). - Tyler Busby, Mar 24 2023

Extensions

a(25)-a(26) from Tyler Busby, Mar 24 2023

A119188 Triangular numbers composed of digits {3,5,7}.

Original entry on oeis.org

3, 55, 5735537337753, 53737577757753, 335355753333373553355, 573535753575353335777335733757755, 7357333757773777355335733737733553753
Offset: 1

Views

Author

Giovanni Resta, May 10 2006

Keywords

Comments

a(8) > 10^37. - Tyler Busby, Mar 24 2023

Links

Crossrefs

Cf. A000217, A119189. See A119033 for a table of cross-references.

Formula

a(n) = A000217(A119189(n)). - Tyler Busby, Mar 24 2023

Extensions

a(6)-a(7) from Tyler Busby, Mar 24 2023

A119190 Triangular numbers composed of digits {3,5,8}.

Original entry on oeis.org

3, 55, 8385, 353833535835, 338385588883835583555, 5838535388555338533383385, 55335355335583353383833585
Offset: 1

Views

Author

Giovanni Resta, May 10 2006

Keywords

Comments

a(8) > 10^40. - Tyler Busby, Mar 29 2023

Links

Crossrefs

Cf. A000217, A119191. See A119033 for a table of cross-references.

Formula

a(n) = A000217(A119191(n)). - Tyler Busby, Mar 29 2023

A119192 Triangular numbers composed of digits {3,5,9}.

Original entry on oeis.org

3, 55, 595, 5995, 33533955, 5939355555, 9993335593335, 535555935535935, 599593353353393939939955, 595993553593935939553359535599399555
Offset: 1

Views

Author

Giovanni Resta, May 10 2006

Keywords

Comments

a(11) > 10^39. - Tyler Busby, Mar 29 2023

Links

Crossrefs

Cf. A000217, A119193. See A119033 for a table of cross-references.

Formula

a(n) = A000217(A119193(n)).

Extensions

a(10) from Max Alekseyev, May 21 2011

A119194 Triangular numbers composed of digits {3,6,7}.

Original entry on oeis.org

3, 6, 36, 66, 666, 76636, 333336, 36666766, 767673336, 3366367673376, 77337367776676667673367336
Offset: 1

Views

Author

Giovanni Resta, May 10 2006

Keywords

Comments

a(12) > 10^40. - Tyler Busby, Mar 29 2023

Links

Crossrefs

Cf. A000217, A053947, A119195. See A119033 for a table of cross-references.

Formula

a(n) = A000217(A119195(n)). - Tyler Busby, Mar 29 2023

A119196 Triangular numbers composed of digits {3,6,8}.

Original entry on oeis.org

3, 6, 36, 66, 666, 333336, 8868366, 86638866, 83838368386, 636633688636, 3336366833866, 3866366838336666, 63386366836686666, 636638868363883336386, 3868888666888666363866, 66886368686886866888888866, 683686666688383838366383386
Offset: 1

Views

Author

Giovanni Resta, May 10 2006

Keywords

Comments

a(18) > 10^40. - Tyler Busby, Mar 24 2023

Links

Crossrefs

Cf. A000217, A058466, A119197. See A119033 for a table of cross-references.

Formula

a(n) = A000217(A119197(n)). - Tyler Busby, Mar 24 2023

Extensions

a(16)-a(17) from Tyler Busby, Mar 24 2023

A119198 Triangular numbers composed of digits {3,6,9}.

Original entry on oeis.org

3, 6, 36, 66, 666, 333336, 936396, 963966, 3966336, 3996939936, 99363693366, 63666996693966, 339666999336666, 633636693339936, 39696699699366996, 999699963339963966, 36936333639936696636, 6933666366666339963969663666, 393996396333933393393669696696, 399693363966633933999339639336
Offset: 1

Views

Author

Giovanni Resta, May 10 2006

Keywords

Links

Crossrefs

Cf. A000217, A053949, A119199. See A119033 for a table of cross-references.

Formula

a(n) = A000217(A119199(n)). - Tyler Busby, Mar 26 2023

Extensions

a(19)-a(20) from Tyler Busby, Mar 26 2023

A119200 Triangular numbers composed of digits {3,7,8}.

Original entry on oeis.org

3, 78, 378, 8778, 887778, 88877778, 8787733878, 8888777778, 73778888778, 888887777778, 8883333788878, 37383337333378, 88888877777778, 8888888777777778, 888888887777777778, 88888888877777777778, 8888888888777777777778, 887783783833373788333378
Offset: 1

Views

Author

Giovanni Resta, May 10 2006

Keywords

Links

Crossrefs

Cf. A000217, A119201. See A119033 for a table of cross-references.

Formula

a(n) = A000217(A119201(n)). - Tyler Busby, Mar 24 2023

Extensions

a(17)-a(18) from Tyler Busby, Mar 24 2023
Previous Showing 81-90 of 112 results. Next

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