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.

A293080 Number of n X n 0..1 arrays with the number of 1's horizontally or antidiagonally adjacent to some 0 two less than the number of 0's adjacent to some 1.

Table of values

n a(n)
1 0
2 0
3 53
4 8108
5 3786544
6 6736259130
7 48001754870966
8 1383438455350705382
9 161312497547006248372814
10 76023645347398961263283802334
11 144620752785016707502340606159808938

List of values

[0, 0, 53, 8108, 3786544, 6736259130, 48001754870966, 1383438455350705382, 161312497547006248372814, 76023645347398961263283802334, 144620752785016707502340606159808938]

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

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