cp's OEIS Frontend

A239996 Number of n X 3 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 A239996 #8 May 04 2025 15:14:28
%S A239996 4,25,190,1372,10405,83029,685898,5825700,50417154,441675344,
%T A239996 3899065908,34583504110,307633283500,2741312316323,24453522555996,
%U A239996 218272506712305,1949041652201113,17407703510071602,155496451538874916,1389102990940616855,12409927401794044619
%N A239996 Number of n X 3 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.
%H A239996 R. H. Hardin, <a href="/A239996/b239996.txt">Table of n, a(n) for n = 1..210</a>
%e A239996 Some solutions for n=5:
%e A239996 ..0..0..3....3..3..0....0..3..3....0..3..3....0..0..3....0..3..3....3..3..0
%e A239996 ..0..3..3....0..3..1....0..0..3....0..0..3....3..3..0....0..3..3....2..2..3
%e A239996 ..0..2..1....0..2..0....3..2..3....0..3..3....3..3..2....0..2..1....0..2..0
%e A239996 ..0..2..0....0..0..0....2..1..1....3..3..1....2..2..2....3..3..2....0..2..2
%e A239996 ..3..3..2....2..0..2....2..1..2....3..1..3....3..1..3....0..2..1....2..2..2
%Y A239996 Column 3 of A240000.
%K A239996 nonn
%O A239996 1,1
%A A239996 _R. H. Hardin_, Mar 30 2014