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.

A131750 Numbers that are both centered triangular and centered square.

Table of values

n a(n)
1 1
2 85
3 16381
4 3177721
5 616461385
6 119590330861
7 23199907725541
8 4500662508423985
9 873105326726527441
10 169377932722437899461
11 32858445842826225967885
12 6374369115575565399870121

List of values

[1, 85, 16381, 3177721, 616461385, 119590330861, 23199907725541, 4500662508423985, 873105326726527441, 169377932722437899461, 32858445842826225967885, 6374369115575565399870121]

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

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