A316954 - OEIS

%I #4 Jul 17 2018 12:29:11

%S 1,8,220,16976,3796326,2402722112,4359094468163,22572190764246375,

%T 333872791039707135291

%N Number of nXn 0..1 arrays with every element unequal to 0, 1, 2, 3, 4, 5 or 8 king-move adjacent elements, with upper left element zero.

%C Diagonal of A316960.

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A316960.

%K nonn

%O 1,2

%A _R. H. Hardin_, Jul 17 2018