A316802 - OEIS

%I #4 Jul 14 2018 14:56:00

%S 1,8,247,28248,12075849,19261290694,114545399709628,

%T 2540187335598061548,210067171005687284366855,

%U 64781669533557315098076107091

%N Number of nXn 0..1 arrays with every element unequal to 0, 1, 2, 3, 4, 5 or 6 king-move adjacent elements, with upper left element zero.

%C Diagonal of A316808.

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

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

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

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

%Y Cf. A316808.

%K nonn

%O 1,2

%A _R. H. Hardin_, Jul 14 2018