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A285026 Number of n X 4 0..1 arrays with the number of 1's horizontally, antidiagonally or vertically adjacent to some 0 one less than the number of 0's adjacent to some 1. 1

%I

%S 2,26,442,6460,96458,1449814,22043878,336883696,5171750894,

%T 79634735346,1229304353554,19015329654036,294656614022300,

%U 4573021347213134,71071712948803680,1105968089007186270,17230453143587374712

%N Number of n X 4 0..1 arrays with the number of 1's horizontally, antidiagonally or vertically adjacent to some 0 one less than the number of 0's adjacent to some 1.

%C Column 4 of A285030.

%H R. H. Hardin, <a href="/A285026/b285026.txt">Table of n, a(n) for n = 1..207</a>

%e Some solutions for n=4

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

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

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

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

%Y Cf. A285030.

%K nonn

%O 1,1

%A _R. H. Hardin_, Apr 08 2017

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Last modified May 9 07:53 EDT 2021. Contains 343692 sequences. (Running on oeis4.)