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

%I #4 Apr 17 2018 13:25:49

%S 16,21,71,197,703,3069,11079,39281,147655,574771,2154055,8024515,

%T 30383341,115990813,439167167,1658045069,6291314637,23940047265,

%U 90892145957,344679542151,1309322301315,4979238288779,18921620186225

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

%C Row 5 of A303040.

%H R. H. Hardin, <a href="/A303043/b303043.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A303040.

%K nonn

%O 1,1

%A _R. H. Hardin_, Apr 17 2018