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 A303256 Number of 5Xn 0..1 arrays with every element equal to 1, 2, 3, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 1

%I

%S 0,111,1183,8664,106803,1218385,13529019,153269484,1719616546,

%T 19364602930,218131990331,2454766315292,27636145270965,

%U 311127611619222,3502509703999865,39430191355003478,443891694271539222

%N Number of 5Xn 0..1 arrays with every element equal to 1, 2, 3, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

%C Row 5 of A303254.

%H R. H. Hardin, <a href="/A303256/b303256.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A303254.

%K nonn

%O 1,2

%A _R. H. Hardin_, Apr 20 2018

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Last modified March 23 23:09 EDT 2023. Contains 361454 sequences. (Running on oeis4.)