cp's OEIS Frontend

A239855 Number of nX5 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 A239855 #6 Jun 02 2025 09:34:47
%S A239855 8,29,255,1114,4549,28184,125255,860559,4802971,24477675,167075425,
%T A239855 824227912,4838346333,28474926407,141317949021,883311612241,
%U A239855 4759951691561,26045766222755,156842648720379,819459824961446
%N A239855 Number of nX5 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 A239855 Column 5 of A239858
%H A239855 R. H. Hardin, <a href="/A239855/b239855.txt">Table of n, a(n) for n = 1..40</a>
%e A239855 Some solutions for n=4
%e A239855 ..3..2..3..2..3....3..2..3..3..2....3..2..3..2..3....3..2..2..2..3
%e A239855 ..2..1..1..1..2....2..1..1..1..3....2..1..2..3..2....2..1..0..1..2
%e A239855 ..3..1..3..1..2....3..0..2..3..3....3..0..2..2..0....3..1..3..2..2
%e A239855 ..2..1..1..1..2....2..1..0..2..2....3..2..2..0..2....3..2..2..2..2
%K A239855 nonn
%O A239855 1,1
%A A239855 _R. H. Hardin_, Mar 28 2014