cp's OEIS Frontend

A240005 Number of 6Xn 0..3 arrays with no element equal to one plus the sum of elements to its left or two plus the sum of the elements above it or one plus the sum of the elements diagonally to its northwest, modulo 4.

%I A240005 #6 Jun 02 2025 09:37:45
%S A240005 156,5012,83029,1225281,15981219,191691132,2090236137,20967693050,
%T A240005 195664738888,1709973352188,14072972956499,109646306877457,
%U A240005 811882008990473,5734156428747664,38755892651094582,251427858506122705
%N A240005 Number of 6Xn 0..3 arrays with no element equal to one plus the sum of elements to its left or two plus the sum of the elements above it or one plus the sum of the elements diagonally to its northwest, modulo 4.
%C A240005 Row 6 of A240000
%H A240005 R. H. Hardin, <a href="/A240005/b240005.txt">Table of n, a(n) for n = 1..210</a>
%e A240005 Some solutions for n=3
%e A240005 ..3..3..0....0..3..3....3..3..0....3..3..0....3..3..0....3..3..0....0..3..3
%e A240005 ..2..2..3....0..0..2....0..2..1....2..2..3....3..2..3....0..3..1....0..0..2
%e A240005 ..0..2..0....3..3..2....3..2..1....2..2..0....3..2..0....0..3..1....3..3..0
%e A240005 ..2..0..0....0..3..2....3..3..1....0..0..0....0..2..0....0..2..1....3..3..2
%e A240005 ..2..2..2....0..2..1....0..2..0....2..0..0....2..2..0....3..2..0....3..2..0
%e A240005 ..0..0..2....0..2..2....2..0..0....2..2..2....2..0..2....3..1..2....0..2..0
%K A240005 nonn
%O A240005 1,1
%A A240005 _R. H. Hardin_, Mar 30 2014