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A241280 Number of nX4 0..3 arrays with no element equal to one plus the sum of elements to its left or zero plus the sum of elements above it or one plus the sum of the elements diagonally to its northwest or one plus the sum of the elements antidiagonally to its northeast, modulo 4.

%I A241280 #6 Jun 02 2025 10:03:17
%S A241280 7,13,126,773,6783,77955,1009773,14440961,217830879,3381893022,
%T A241280 53303588755,846694715304,13502819912939,215775668844659,
%U A241280 3451661371624419,55243520432395260,884402593677949937
%N A241280 Number of nX4 0..3 arrays with no element equal to one plus the sum of elements to its left or zero plus the sum of elements above it or one plus the sum of the elements diagonally to its northwest or one plus the sum of the elements antidiagonally to its northeast, modulo 4.
%C A241280 Column 4 of A241283
%H A241280 R. H. Hardin, <a href="/A241280/b241280.txt">Table of n, a(n) for n = 1..210</a>
%e A241280 Some solutions for n=4
%e A241280 ..3..3..2..3....3..2..3..3....3..2..3..2....3..2..3..2....3..3..2..3
%e A241280 ..2..1..3..0....0..3..1..2....0..3..2..3....0..3..2..3....2..1..3..2
%e A241280 ..2..1..3..2....0..0..2..2....2..2..2..2....2..0..2..0....2..2..2..2
%e A241280 ..2..2..2..2....2..2..0..0....2..1..2..0....0..0..2..2....2..0..2..2
%K A241280 nonn
%O A241280 1,1
%A A241280 _R. H. Hardin_, Apr 18 2014