A316546 - OEIS

%I #4 Jul 06 2018 12:31:18

%S 1,5,10,42,251,1811,18978,336604,7870292,267729787,13016021132

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

%C Diagonal of A316552.

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A316552.

%K nonn

%O 1,2

%A _R. H. Hardin_, Jul 06 2018