cp's OEIS Frontend

A241437 Number of 3 X n 0..3 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of the elements above it or zero 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 A241437 #6 May 07 2022 21:57:34
%S A241437 4,2,22,74,158,448,1272,3284,8331,23365,63819,159963,450553,1178189,
%T A241437 3085252,8574583,21981254,59397292,161093107,416692229,1133829778,
%U A241437 3023012096,7951525097,21508340343,56988406704,151552827477,406957891025
%N A241437 Number of 3 X n 0..3 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of the elements above it or zero 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 A241437 Row 3 of A241435.
%H A241437 R. H. Hardin, <a href="/A241437/b241437.txt">Table of n, a(n) for n = 1..170</a>
%e A241437 Some solutions for n=4
%e A241437 ..3..3..2..2....2..2..3..2....3..3..2..3....3..2..3..2....2..2..3..3
%e A241437 ..3..1..0..0....2..1..1..2....2..1..1..3....2..1..1..2....2..1..1..2
%e A241437 ..2..0..2..2....2..1..2..0....3..3..1..2....3..3..2..2....3..3..2..0
%Y A241437 Cf. A241435.
%K A241437 nonn
%O A241437 1,1
%A A241437 _R. H. Hardin_, Apr 22 2014