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A239602 Number of 4Xn 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 one plus the sum of the elements antidiagonally to its northeast, modulo 4.

%I A239602 #6 Jun 02 2025 09:29:52
%S A239602 7,4,82,643,8773,128347,1991329,31686730,510551001,8269184568,
%T A239602 134276229983,2183190483244,35519217176984,578060604385531,
%U A239602 9409214132537899,153168259416071355,2493459020526521679
%N A239602 Number of 4Xn 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 one plus the sum of the elements antidiagonally to its northeast, modulo 4.
%C A239602 Row 4 of A239599
%H A239602 R. H. Hardin, <a href="/A239602/b239602.txt">Table of n, a(n) for n = 1..27</a>
%e A239602 Some solutions for n=4
%e A239602 ..3..0..0..0....3..2..3..3....3..0..0..2....3..0..0..0....2..3..3..3
%e A239602 ..2..3..0..0....2..1..1..3....2..3..2..2....2..3..2..2....2..1..2..2
%e A239602 ..3..2..2..2....3..2..2..2....3..2..2..0....3..1..1..2....3..0..1..3
%e A239602 ..2..1..2..0....2..1..0..0....2..3..2..0....3..2..2..2....3..2..2..0
%K A239602 nonn
%O A239602 1,1
%A A239602 _R. H. Hardin_, Mar 22 2014