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.

A253622 Centered heptagonal numbers (A069099) which are also centered pentagonal numbers (A005891).

Table of values

n a(n)
1 1
2 106
3 15016
4 2132131
5 302747551
6 42988020076
7 6103996103206
8 866724458635141
9 123068769130086781
10 17474898492013687726
11 2481312517096813570276
12 352328902529255513291431
13 50028222846637186073812891
14 7103655315319951166968139056

List of values

[1, 106, 15016, 2132131, 302747551, 42988020076, 6103996103206, 866724458635141, 123068769130086781, 17474898492013687726, 2481312517096813570276, 352328902529255513291431, 50028222846637186073812891, 7103655315319951166968139056]

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

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