A304426 - OEIS

%I #4 May 12 2018 09:38:23

%S 8,5824,210954,11085965,536823135,26510744474,1305482386171,

%T 64363459841666,3173399640697899,156482480979101412,

%U 7716615213172103411,380537936646809324687,18766124693821831394655,925451422109734164136747

%N Number of nX7 0..1 arrays with every element unequal to 1, 2, 3, 4 or 5 king-move adjacent elements, with upper left element zero.

%C Column 7 of A304427.

%H R. H. Hardin, <a href="/A304426/b304426.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A304427.

%K nonn

%O 1,1

%A _R. H. Hardin_, May 12 2018