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A302957 Number of 6Xn 0..1 arrays with every element equal to 1, 2, 3, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 1

%I #4 Apr 16 2018 11:44:19

%S 0,361,25131,998670,50519822,2766909379,147310312318,7792601909575,

%T 413221140108695,21925142145040301,1163067389442877369,

%U 61694202460260635301,3272597655031259362393,173597299390133576071391

%N Number of 6Xn 0..1 arrays with every element equal to 1, 2, 3, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

%C Row 6 of A302953.

%H R. H. Hardin, <a href="/A302957/b302957.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

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

%Y Cf. A302953.

%K nonn

%O 1,2

%A _R. H. Hardin_, Apr 16 2018

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Last modified April 23 18:16 EDT 2024. Contains 371916 sequences. (Running on oeis4.)