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A285751 Number of 2 X n 0..1 arrays with the number of 1's horizontally, diagonally or antidiagonally adjacent to some 0 one less than the number of 0's adjacent to some 1. 1

%I

%S 0,4,8,44,150,540,2042,7760,29654,114336,442152,1713832,6655764,

%T 25893236,100873154,393455752,1536357188,6005069488,23492496948,

%U 91979426392,360391230046,1413045432264,5543910852492,21763924972776,85487754197390

%N Number of 2 X n 0..1 arrays with the number of 1's horizontally, diagonally or antidiagonally adjacent to some 0 one less than the number of 0's adjacent to some 1.

%C Row 2 of A285750.

%H R. H. Hardin, <a href="/A285751/b285751.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

%e ..0..0..0..1. .1..1..0..0. .0..1..0..0. .0..0..0..0. .1..1..0..0

%e ..0..0..0..0. .0..1..1..0. .1..1..0..0. .0..0..0..1. .0..1..0..0

%Y Cf. A285750.

%K nonn

%O 1,2

%A _R. H. Hardin_, Apr 25 2017

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Last modified May 20 23:05 EDT 2022. Contains 353886 sequences. (Running on oeis4.)