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.

A253922 Indices of centered pentagonal numbers (A005891) which are also octagonal numbers (A000567).

Table of values

n a(n)
1 1
2 56
3 297
4 26752
5 142913
6 12894168
7 68883529
8 6214961984
9 33201717825
10 2995598781880
11 16003159107881
12 1443872397903936
13 7713489488280577
14 695943500190915032
15 3717885930192129993
16 335443323219623141248
17 1792013304863118375809
18 161682985848358163166264

List of values

[1, 56, 297, 26752, 142913, 12894168, 68883529, 6214961984, 33201717825, 2995598781880, 16003159107881, 1443872397903936, 7713489488280577, 695943500190915032, 3717885930192129993, 335443323219623141248, 1792013304863118375809, 161682985848358163166264]

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

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