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A241258 Number of 4Xn 0..3 arrays with no element equal to one plus the sum of elements to its left or zero 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.

%I A241258 #6 Jun 02 2025 10:02:41
%S A241258 6,39,47,120,446,1202,3822,11428,35540,119334,350064,1176852,3642784,
%T A241258 10937680,36354323,110544260,342643258,1103393347,3372356997,
%U A241258 10609585314,33372515121,103547161107,325451014192,1015953932945,3176715059861
%N A241258 Number of 4Xn 0..3 arrays with no element equal to one plus the sum of elements to its left or zero 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 A241258 Row 4 of A241255
%H A241258 R. H. Hardin, <a href="/A241258/b241258.txt">Table of n, a(n) for n = 1..180</a>
%e A241258 Some solutions for n=4
%e A241258 ..2..2..3..3....2..2..3..2....2..2..3..3....2..2..3..3....3..3..2..2
%e A241258 ..3..1..2..2....3..1..0..3....0..0..2..1....3..1..2..1....2..1..3..1
%e A241258 ..2..2..3..3....2..1..1..2....0..0..2..2....2..2..2..2....0..2..0..1
%e A241258 ..0..2..1..2....2..2..3..2....0..0..0..3....2..0..0..1....0..0..2..2
%K A241258 nonn
%O A241258 1,1
%A A241258 _R. H. Hardin_, Apr 18 2014