|
%I #6 Apr 26 2020 20:46:20
%S 2,8,72,1569,79855,9388654,2573527520,1637027372706,2419325802095729,
%T 8303882960856820956,66201888284206993138538,
%U 1225832721132764188627254836
%N Number of n X n 0..1 arrays with each 1 horizontally or vertically adjacent to 0 or 2 1's.
%C Diagonal of A295051.
%e Some solutions for n=5
%e ..0..0..0..1..0. .1..0..1..0..1. .0..0..1..0..0. .0..0..0..0..0
%e ..0..0..1..0..0. .0..0..0..0..0. .1..0..0..1..0. .1..0..0..1..1
%e ..0..0..0..0..0. .1..0..0..0..1. .0..0..0..0..0. .0..1..0..1..1
%e ..0..1..1..0..1. .0..0..0..0..0. .1..0..0..0..1. .1..0..1..0..0
%e ..0..1..1..0..0. .1..0..0..0..0. .0..1..0..0..0. .0..0..0..0..0
%Y Cf. A295051.
%K nonn
%O 1,1
%A _R. H. Hardin_, Nov 13 2017
| 