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.

A280070 Indices of 10-gonal numbers (A001107) that are also centered 10-gonal numbers (A062786).

Table of values

n a(n)
1 1
2 11
3 191
4 3421
5 61381
6 1101431
7 19764371
8 354657241
9 6364065961
10 114198530051
11 2049209474951
12 36771572019061
13 659839086868141
14 11840331991607471
15 212466136762066331
16 3812550129725586481
17 68413436198298490321
18 1227629301439647239291
19 22028913989715351816911

List of values

[1, 11, 191, 3421, 61381, 1101431, 19764371, 354657241, 6364065961, 114198530051, 2049209474951, 36771572019061, 659839086868141, 11840331991607471, 212466136762066331, 3812550129725586481, 68413436198298490321, 1227629301439647239291, 22028913989715351816911]

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

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