cp's OEIS Frontend

A241309 Number of 4Xn 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 zero plus the sum of the elements antidiagonally to its northeast, modulo 4.

%I A241309 #6 Jun 02 2025 10:05:28
%S A241309 25,12,116,330,1462,5757,22343,79043,304799,1330380,4460064,16854505,
%T A241309 67201703,234900475,920572773,3459723044,12626410604,48658166127,
%U A241309 178994028939,683367868924,2559363759045,9527974589307,36279708405734
%N A241309 Number of 4Xn 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 zero plus the sum of the elements antidiagonally to its northeast, modulo 4.
%C A241309 Row 4 of A241306
%H A241309 R. H. Hardin, <a href="/A241309/b241309.txt">Table of n, a(n) for n = 1..154</a>
%e A241309 Some solutions for n=4
%e A241309 ..3..2..3..3....3..2..3..2....2..3..2..2....3..2..2..2....2..3..3..3
%e A241309 ..3..0..1..1....1..2..1..1....2..1..0..1....3..0..0..1....2..1..1..1
%e A241309 ..1..2..0..2....3..2..3..1....2..3..2..1....1..0..2..1....2..3..0..2
%e A241309 ..1..3..3..2....3..2..2..2....2..1..2..3....3..0..2..3....1..3..3..1
%K A241309 nonn
%O A241309 1,1
%A A241309 _R. H. Hardin_, Apr 18 2014