cp's OEIS Frontend

A266159 Number of 4Xn arrays containing n copies of 0..4-1 with no element plus any horizontal, vertical or antidiagonal neighbor equal to 4-1.

%I A266159 #6 Aug 12 2016 06:53:59
%S A266159 8,16,40,272,5512,149232,3741272,88206664,2011246768,44947984536,
%T A266159 994530883200,21910419274224,482270052357104,10627338833274072,
%U A266159 234722322559349072,5199318920693106784,115536868266599859880
%N A266159 Number of 4Xn arrays containing n copies of 0..4-1 with no element plus any horizontal, vertical or antidiagonal neighbor equal to 4-1.
%C A266159 Row 4 of A266158.
%H A266159 R. H. Hardin, <a href="/A266159/b266159.txt">Table of n, a(n) for n = 1..24</a>
%e A266159 Some solutions for n=6
%e A266159 ..0..1..3..2..0..2....0..1..3..2..2..0....0..0..2..2..2..3....1..3..3..3..2..2
%e A266159 ..1..3..3..2..0..0....1..1..3..3..2..0....1..0..2..3..3..1....1..3..2..2..0..0
%e A266159 ..3..3..2..0..1..1....1..1..3..3..2..0....0..2..3..3..1..0....1..3..2..0..1..0
%e A266159 ..2..2..0..1..1..3....1..3..2..2..0..0....0..2..3..1..1..1....3..2..0..1..1..0
%Y A266159 Cf. A266158.
%K A266159 nonn
%O A266159 1,1
%A A266159 _R. H. Hardin_, Dec 22 2015