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.

A278202 Number of n X n 0..1 arrays with every element both equal and not equal to some elements at offset (-1,-1), (-1,0), (-1,1), (0,-1), (0,1), (1,-1), (1,0) or (1,1), with upper left element zero.

Table of values

n a(n)
1 0
2 3
3 97
4 8242
5 3295771
6 5306819216
7 33056811286568
8 812312404546266967
9 78877646007318566942149
10 30229204386668969418436705255
11 45720403850059908972915757270717926

List of values

[0, 3, 97, 8242, 3295771, 5306819216, 33056811286568, 812312404546266967, 78877646007318566942149, 30229204386668969418436705255, 45720403850059908972915757270717926]