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A241051 Number of nX3 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 zero 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 A241051 #6 Jun 02 2025 10:00:50
%S A241051 4,2,3,6,6,15,31,58,170,388,677,1821,3533,7379,18106,37073,82436,
%T A241051 193696,400749,914323,2049019,4372160,9966006,21985585,47864157,
%U A241051 108257464,237088178,522824937,1171545248,2567836513,5698120668,12680572718
%N A241051 Number of nX3 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 zero 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 A241051 Column 3 of A241054
%H A241051 R. H. Hardin, <a href="/A241051/b241051.txt">Table of n, a(n) for n = 1..250</a>
%e A241051 All solutions for n=4
%e A241051 ..3..3..2....3..3..2....3..3..2....3..3..2....3..3..2....3..3..2
%e A241051 ..2..2..0....2..2..0....2..2..0....2..2..0....2..0..0....2..2..0
%e A241051 ..3..3..0....3..3..0....2..0..0....3..3..0....2..0..0....3..3..0
%e A241051 ..3..2..0....2..2..3....2..0..0....2..2..0....2..0..0....3..2..3
%K A241051 nonn
%O A241051 1,1
%A A241051 _R. H. Hardin_, Apr 15 2014