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.

A253599 Centered square numbers (A001844) which are also centered heptagonal numbers (A069099).

Table of values

n a(n)
1 1
2 841
3 43513
4 54236113
5 2807177521
6 3498988573081
7 181102250526121
8 225733748749491361
9 11683630587634972513
10 14562987063325697070313
11 753757743549580366157401
12 939516547177660272044661361
13 48627927055673997154643575441
14 60611970510056587727363585953081

List of values

[1, 841, 43513, 54236113, 2807177521, 3498988573081, 181102250526121, 225733748749491361, 11683630587634972513, 14562987063325697070313, 753757743549580366157401, 939516547177660272044661361, 48627927055673997154643575441, 60611970510056587727363585953081]

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

Content is available under The OEIS End-User License Agreement.