|
%I #4 Aug 09 2018 09:51:43
%S 0,1,1,26,220,4692,163297,13125877,1146051177,213068838812
%N Number of nXn 0..1 arrays with every element unequal to 2, 3 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
%C Diagonal of A317871.
%e Some solutions for n=5
%e ..0..1..1..0..0. .0..1..0..1..0. .0..1..1..0..1. .0..1..1..0..0
%e ..1..0..0..1..1. .1..0..0..1..1. .1..0..0..0..0. .1..0..0..1..1
%e ..0..0..0..0..0. .0..0..1..1..0. .0..0..1..1..1. .1..1..0..0..0
%e ..1..1..0..0..1. .1..1..0..1..0. .1..1..1..1..0. .0..0..0..0..1
%e ..0..0..1..1..0. .0..1..0..0..1. .0..0..0..0..1. .1..1..1..1..0
%Y Cf. A317871.
%K nonn
%O 1,4
%A _R. H. Hardin_, Aug 09 2018
| 