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.

A284328 Number of n X n 0..1 arrays with the number of 1's horizontally, diagonally or antidiagonally adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero.

This page as a plain text file.
%I A284328 #6 Apr 06 2020 00:33:37
%S A284328 1,4,49,5130,1792007,3063494246,20513380740103,582475612060753356
%N A284328 Number of n X n 0..1 arrays with the number of 1's horizontally, diagonally or antidiagonally adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero.
%C A284328 Diagonal of A284334.
%e A284328 Some solutions for n=4
%e A284328 ..0..1..1..1. .0..0..0..0. .0..1..0..1. .0..0..0..1. .0..1..0..0
%e A284328 ..0..1..1..1. .1..1..0..1. .0..1..1..0. .0..1..0..1. .0..1..1..1
%e A284328 ..0..1..1..1. .1..1..1..1. .0..1..1..0. .0..1..1..1. .1..0..1..0
%e A284328 ..0..0..1..1. .0..1..0..0. .1..0..0..1. .0..1..0..1. .1..1..0..0
%Y A284328 Cf. A284334.
%K A284328 nonn
%O A284328 1,2
%A A284328 _R. H. Hardin_, Mar 25 2017

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

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