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A241250 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 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 A241250 #6 Jun 02 2025 10:01:55
%S A241250 4,4,13,47,174,606,2111,6647,21752,70595,229009,744946,2418238,
%T A241250 7843143,25449403,82556576,267788667,868709237,2817909735,9140802924,
%U A241250 29651305001,96183371668,311999852696,1012067748968,3282944840574,10649213948821
%N A241250 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 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 A241250 Column 3 of A241255
%H A241250 R. H. Hardin, <a href="/A241250/b241250.txt">Table of n, a(n) for n = 1..210</a>
%e A241250 Some solutions for n=4
%e A241250 ..3..3..2....2..2..3....3..3..2....3..3..2....2..2..3....3..3..2....3..3..2
%e A241250 ..2..1..3....3..1..2....2..1..3....2..1..3....3..1..2....2..1..3....2..1..1
%e A241250 ..2..2..3....2..1..3....2..2..3....2..1..3....2..1..3....2..1..3....2..2..2
%e A241250 ..0..0..2....2..2..2....2..1..3....2..0..1....2..2..3....2..0..2....2..1..2
%K A241250 nonn
%O A241250 1,1
%A A241250 _R. H. Hardin_, Apr 18 2014