|
%I
%S 2,11,184,8391,1117226,426233396,468469936974,1481365505094176,
%T 13481259599060854448,353057109477250625199058,
%U 26608269052923054935486338857
%N Number of n X n 0..1 arrays with each 1 horizontally or vertically adjacent to 0, 1, 3 or 4 1's.
%C Diagonal of A295652.
%e Some solutions for n=4
%e ..0..1..0..1. .0..0..0..0. .0..0..1..0. .0..1..1..0. .0..1..0..1
%e ..0..0..0..0. .0..0..1..0. .0..1..1..1. .0..0..0..0. .0..0..1..0
%e ..0..1..1..0. .1..0..0..0. .0..0..1..0. .0..0..1..0. .1..0..0..0
%e ..0..0..0..1. .1..0..0..0. .0..0..0..1. .0..1..0..0. .0..0..1..1
%Y Cf. A295652.
%K nonn
%O 1,1
%A _R. H. Hardin_, Nov 25 2017
| 