%I
%S 7,109,2221,46260,874352,15039319,232886648,3315673203,44101959522,
%T 556619827523,6695977596256,76860374449526,842768492337658,
%U 8843612429559950,89035572461799515,862379702184879987
%N Number of nX6 0..3 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of elements above it or two plus the sum of the elements diagonally to its northwest, modulo 4
%C Column 6 of A239849
%H R. H. Hardin, <a href="/A239848/b239848.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=4
%e ..0..0..0..0..3..3....0..0..3..3..0..0....0..0..3..3..0..0....0..3..3..0..0..0
%e ..0..0..3..3..1..3....0..0..3..3..0..0....0..3..1..3..2..0....0..3..2..3..3..3
%e ..0..3..3..2..2..1....3..3..0..0..2..3....3..1..3..2..1..0....3..1..3..1..2..2
%e ..3..3..2..0..0..2....3..3..0..1..2..3....3..2..1..2..3..2....3..3..0..2..3..3
%K nonn
%O 1,1
%A _R. H. Hardin_, Mar 28 2014
