A296013 - OEIS

%I #6 Apr 26 2020 20:56:39

%S 1,7,30,366,10703,437195,40196846,7361110427,2440444635515,

%T 1635743807110941,2128698320399136899

%N Number of n X n 0..1 arrays with each 1 adjacent to 1 or 4 king-move neighboring 1's.

%C Diagonal of A296019.

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A296019.

%K nonn

%O 1,2

%A _R. H. Hardin_, Dec 02 2017