cp's OEIS Frontend

A241401 Number of 5Xn 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 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 A241401 #5 Jun 02 2025 10:08:04
%S A241401 10,64,340,2780,15339,129985,667050,2949778,18902401,91648139,
%T A241401 516486984,3075569596,15073466440,85957361897,473425616837,
%U A241401 2340472941060,13328226383734,73626242006464,386042800402280,2155794635092538
%N A241401 Number of 5Xn 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 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 A241401 Row 5 of A241397
%e A241401 Some solutions for n=3
%e A241401 ..2..3..3....3..2..2....2..3..3....3..2..2....3..2..2....3..2..2....3..2..2
%e A241401 ..2..1..2....1..2..0....2..3..2....1..2..0....2..1..0....1..2..0....1..2..0
%e A241401 ..2..0..0....2..3..0....2..0..0....3..0..2....1..3..2....3..2..0....2..3..0
%e A241401 ..2..3..3....2..3..2....2..0..3....3..2..2....1..0..0....1..0..0....1..3..2
%e A241401 ..2..3..3....2..0..3....2..1..0....2..0..0....1..2..2....3..2..0....3..2..0
%K A241401 nonn
%O A241401 1,1
%A A241401 _R. H. Hardin_, Apr 20 2014