A316582 - OEIS

%I #4 Jul 07 2018 08:35:04

%S 8,4184,25271,634867,11450072,209344758,4227286531,79708721021,

%T 1560689236544,30135348185417,583386750149395,11308476165531835,

%U 218830109654585064,4239285443425028198,82084075926813940322

%N Number of nX7 0..1 arrays with every element unequal to 1, 2, 3, 4, 7 or 8 king-move adjacent elements, with upper left element zero.

%C Column 7 of A316583.

%H R. H. Hardin, <a href="/A316582/b316582.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A316583.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jul 07 2018