A303623 - OEIS

%I #4 Apr 27 2018 09:54:59

%S 1,496,5411,160807,5249045,179884814,6323564388,224091914399,

%T 7966090548780,283582960504149,10101258867472961,359903623078870120,

%U 12824695714808614687,457013934122432156738,16286250681449999285061

%N Number of nX7 0..1 arrays with every element equal to 0, 2, 3, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

%C Column 7 of A303624.

%H R. H. Hardin, <a href="/A303623/b303623.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..1. .0..0..0..0..0..0..0

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

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

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

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

%Y Cf. A303624.

%K nonn

%O 1,2

%A _R. H. Hardin_, Apr 27 2018