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 1-2 of 2 results.

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

A053938 Numbers k such that k^2 contains only digits {3,4,6}.

Original entry on oeis.org

2, 6, 8, 58, 2108, 665908, 682908, 6583794, 6814942, 58622892, 183475738, 79651953188, 666585663238, 2081740457806, 66817996351009092, 6666680833328031344
Offset: 1

Views

Author

Patrick De Geest, Mar 15 2000

Keywords

Links

Crossrefs

Cf. A053939.

Extensions

More terms from C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 03 2005
One more term from Jon E. Schoenfield, Sep 04 2006
a(15)-a(16) from Mishima's website, added by Max Alekseyev, Nov 30 2017
Showing 1-2 of 2 results.

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

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