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A295096 Number of nX7 0..1 arrays with each 1 horizontally or vertically adjacent to 1 or 3 1s. 1

%I #4 Nov 14 2017 11:17:05

%S 13,276,4151,70982,1182050,19730839,329926211,5515740725,92205260806,

%T 1541063984572,25759534940464,430584699866692,7197345587681614,

%U 120305799118958433,2010947909346600680,33613611708635276941

%N Number of nX7 0..1 arrays with each 1 horizontally or vertically adjacent to 1 or 3 1s.

%C Column 7 of A295097.

%H R. H. Hardin, <a href="/A295096/b295096.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A295097.

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 14 2017

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Last modified September 10 06:02 EDT 2024. Contains 375773 sequences. (Running on oeis4.)