A296644 - OEIS

%I #6 Apr 26 2020 21:04:25

%S 2,12,111,3159,212537,29547816,10730354337,9020738234108,

%T 17473595660728954,81540413109294209581,892006283570909271440251

%N Number of n X n 0..1 arrays with each 1 adjacent to 0, 1 or 3 king-move neighboring 1's.

%C Diagonal of A296651.

%e Some solutions for n=4

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

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

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

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

%Y Cf. A296651.

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 17 2017