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A239853 Number of nX3 0..3 arrays with no element equal to zero 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 A239853 #6 Jun 02 2025 09:34:32
%S A239853 4,9,44,84,130,343,685,1704,3977,7958,18574,40388,86314,203202,433430,
%T A239853 967411,2205109,4735287,10746065,23937983,52281965,118605335,
%U A239853 261244402,578751600,1302168082,2864205270,6395152778,14272351652,31509181522
%N A239853 Number of nX3 0..3 arrays with no element equal to zero 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 A239853 Column 3 of A239858
%H A239853 R. H. Hardin, <a href="/A239853/b239853.txt">Table of n, a(n) for n = 1..210</a>
%e A239853 Some solutions for n=4
%e A239853 ..3..2..3....2..3..3....3..2..3....3..2..3....3..2..3....2..3..2....3..2..3
%e A239853 ..2..1..0....3..1..2....2..1..0....2..1..2....2..1..0....3..1..3....2..1..0
%e A239853 ..3..0..2....3..2..3....3..0..2....3..1..2....3..0..2....3..1..3....2..0..0
%e A239853 ..2..1..0....3..1..3....3..2..0....3..2..2....2..1..2....2..3..3....2..0..0
%K A239853 nonn
%O A239853 1,1
%A A239853 _R. H. Hardin_, Mar 28 2014