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A240794 Number of 3Xn 0..3 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of the elements above it or zero plus the sum of the elements diagonally to its northwest or zero plus the sum of the elements antidiagonally to its northeast, modulo 4.

%I A240794 #6 Jun 02 2025 10:00:15
%S A240794 4,5,8,19,34,82,278,669,1969,3553,9374,26252,60465,172383,389427,
%T A240794 951837,2531963,6160868,15935881,39165416,97133522,245493084,
%U A240794 614301686,1554508080,3857975809,9676587733,24254427054,60670014406,152847249733
%N A240794 Number of 3Xn 0..3 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of the elements above it or zero 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 A240794 Row 3 of A240792
%H A240794 R. H. Hardin, <a href="/A240794/b240794.txt">Table of n, a(n) for n = 1..188</a>
%e A240794 Some solutions for n=4
%e A240794 ..3..2..3..2....3..2..3..2....3..2..3..3....3..2..3..2....3..2..3..3
%e A240794 ..3..2..1..1....3..2..1..2....3..2..1..2....3..2..1..1....3..2..1..1
%e A240794 ..2..0..0..1....2..2..0..2....2..2..3..1....2..0..0..2....2..2..2..2
%K A240794 nonn
%O A240794 1,1
%A A240794 _R. H. Hardin_, Apr 12 2014