A305910 - OEIS

%I #4 Jun 14 2018 06:59:35

%S 64,752,3534,40412,505624,4408093,42789430,473649265,4825821471,

%T 48835572429,515686964327,5401212916943,56155450958998,

%U 589682890512978,6202400369157255,65116511416512053,685031719571107911

%N Number of nX7 0..1 arrays with every element unequal to 0, 1, 2, 4, 5 or 7 king-move adjacent elements, with upper left element zero.

%C Column 7 of A305911.

%H R. H. Hardin, <a href="/A305910/b305910.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

%Y Cf. A305911.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jun 14 2018