cp's OEIS Frontend

A241358 Number of 3 X n 0..3 arrays with no element equal to zero plus the sum of elements to its left or one plus the sum of the 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 A241358 #6 Apr 27 2021 15:29:42
%S A241358 4,3,19,51,61,230,641,960,3746,9339,16659,60981,137870,288484,962239,
%T A241358 2106198,4825844,14944563,32681302,79714689,232184355,513198469,
%U A241358 1304385350,3611732771,8129991862,21132067461,56282787035,129448737499
%N A241358 Number of 3 X n 0..3 arrays with no element equal to zero plus the sum of elements to its left or one plus the sum of the 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 A241358 Row 3 of A241356.
%H A241358 R. H. Hardin, <a href="/A241358/b241358.txt">Table of n, a(n) for n = 1..194</a>
%e A241358 Some solutions for n=4
%e A241358 ..3..2..3..3....3..2..3..3....2..3..2..2....3..2..3..3....3..2..3..3
%e A241358 ..3..1..1..3....3..1..1..2....2..1..1..2....3..1..2..1....3..1..1..3
%e A241358 ..2..3..0..2....2..3..3..1....2..0..1..2....2..3..3..2....2..1..0..1
%Y A241358 Cf. A241356.
%K A241358 nonn
%O A241358 1,1
%A A241358 _R. H. Hardin_, Apr 20 2014