cp's OEIS Frontend

A241057 Number of 4Xn 0..3 arrays with no element equal to one plus the sum of elements to its left or zero 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 A241057 #6 Jun 02 2025 10:01:19
%S A241057 6,6,6,64,163,280,1423,4167,13389,46605,146031,518568,1559943,5448063,
%T A241057 18661041,57879161,201222626,664132824,2176050370,7339658200,
%U A241057 24139869513,80786317859,267972379590,888853920796,2971967179489,9838548423147
%N A241057 Number of 4Xn 0..3 arrays with no element equal to one plus the sum of elements to its left or zero 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 A241057 Row 4 of A241054
%H A241057 R. H. Hardin, <a href="/A241057/b241057.txt">Table of n, a(n) for n = 1..166</a>
%e A241057 Some solutions for n=4
%e A241057 ..3..3..2..2....3..2..3..3....3..3..2..2....3..3..2..2....3..3..2..3
%e A241057 ..2..1..1..0....2..1..1..0....2..1..1..3....2..1..1..3....2..1..1..0
%e A241057 ..3..3..2..3....2..0..2..0....2..1..1..2....3..3..1..2....3..3..2..2
%e A241057 ..2..2..2..0....2..1..3..0....2..0..2..0....2..0..2..0....2..2..0..0
%K A241057 nonn
%O A241057 1,1
%A A241057 _R. H. Hardin_, Apr 15 2014