The OEIS is supported by the many generous donors to the OEIS Foundation.
%I #3 Apr 20 2014 10:43:47
%S 24,7,243,1323,6380,183400,1904754,10693549,198803445,2384535274,
%T 17881286874
%N Number of 7Xn 0..3 arrays with no element equal to zero plus the sum of elements to its left or one plus the sum of the elements above it or one plus the sum of the elements diagonally to its northwest or zero plus the sum of the elements antidiagonally to its northeast, modulo 4
%C Row 7 of A241356
%e Some solutions for n=3
%e ..3..2..2....3..2..2....3..2..2....3..2..3....3..2..2....3..2..3....3..2..3
%e ..3..1..2....3..1..2....3..1..2....3..1..1....3..1..2....3..1..1....3..1..1
%e ..2..3..3....2..3..2....2..3..3....2..3..3....2..3..2....2..3..2....2..3..2
%e ..3..1..1....3..1..1....3..1..1....3..1..1....3..1..1....3..1..2....3..1..2
%e ..2..3..3....2..3..3....3..2..3....2..3..2....2..3..3....2..3..2....2..3..2
%e ..3..1..1....3..0..2....2..1..1....3..1..2....3..1..1....3..1..2....3..1..2
%e ..3..2..3....2..1..2....2..0..3....2..1..2....3..2..3....2..3..3....2..3..2
%K nonn
%O 1,1
%A _R. H. Hardin_, Apr 20 2014