cp's OEIS Frontend

A239999 Number of nX6 0..3 arrays with no element equal to one plus the sum of elements to its left or two plus the sum of elements above it or one plus the sum of the elements diagonally to its northwest, modulo 4.

%I A239999 #5 Jun 02 2025 09:37:18
%S A239999 7,95,2766,104291,4267171,191691132,9314138750,491124025940,
%T A239999 27909482079539,1692630653817741,107957214893703974
%N A239999 Number of nX6 0..3 arrays with no element equal to one plus the sum of elements to its left or two plus the sum of elements above it or one plus the sum of the elements diagonally to its northwest, modulo 4.
%C A239999 Column 6 of A240000
%e A239999 Some solutions for n=3
%e A239999 ..0..3..3..0..0..0....0..0..0..0..0..3....0..0..0..0..3..3....0..0..0..0..0..3
%e A239999 ..3..2..3..3..3..0....0..3..3..0..0..2....3..3..0..0..2..2....3..3..0..0..0..0
%e A239999 ..2..1..2..0..0..3....0..0..2..1..3..2....3..3..1..3..2..2....0..3..1..0..0..0
%K A239999 nonn
%O A239999 1,1
%A A239999 _R. H. Hardin_, Mar 30 2014