A282309 - OEIS

%I #6 Apr 21 2020 13:04:41

%S 2,16,419,40024,13473987,15544631618,63687929371004,

%T 912607092957406137,45732608217067088771407,

%U 8039776012810034885371563139

%N Number of n X n 0..1 arrays with no 1 equal to more than four of its king-move neighbors.

%C Diagonal of A282316.

%e Some solutions for n=4

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

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

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

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

%Y Cf. A282316.

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 11 2017