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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A332985 Index of triangular numbers that are sum of two pentagonal numbers (A332984).

Original entry on oeis.org

3, 4, 8, 14, 32, 34, 41, 42, 46, 47, 49, 53, 58, 63, 66, 67, 69, 71, 76, 79, 82, 86, 89, 90, 100, 101, 102, 110, 113, 117, 124, 129, 141, 151, 159, 168, 175, 178, 183, 186, 192, 195, 205, 216, 217, 219, 232, 241, 247, 250, 252, 253, 255, 258, 261, 263, 265, 271, 284, 293, 297, 298
Offset: 1

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Author

Olivier Gérard, Mar 05 2020

Keywords

Comments

The index of a triangular number T is the integer n such that T = n*(n+1)/2.

Links

Crossrefs

Cf. A000217 (triangular numbers), A000326 (pentagonal numbers), A332987 (sums of two nonzero pentagonal numbers).
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Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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