cp's OEIS Frontend

A239854 Number of nX4 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 A239854 #6 Jun 02 2025 09:34:39
%S A239854 6,12,78,203,484,1757,4979,19850,68830,207822,799573,2488921,8261626,
%T A239854 29985170,94570580,336674607,1151293607,3775219224,13467393979,
%U A239854 44587173533,151997573760,528796519331,1751682284364,6079087768020
%N A239854 Number of nX4 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 A239854 Column 4 of A239858
%H A239854 R. H. Hardin, <a href="/A239854/b239854.txt">Table of n, a(n) for n = 1..210</a>
%e A239854 Some solutions for n=4
%e A239854 ..2..3..3..2....3..2..3..2....2..3..3..2....2..3..3..2....3..2..3..2
%e A239854 ..3..1..1..3....2..1..2..3....3..1..1..3....3..1..1..3....2..1..2..3
%e A239854 ..3..1..1..3....3..2..2..2....2..3..2..2....3..1..1..3....3..0..2..2
%e A239854 ..2..3..2..2....2..3..0..2....2..0..1..0....3..2..3..3....3..1..1..2
%K A239854 nonn
%O A239854 1,1
%A A239854 _R. H. Hardin_, Mar 28 2014