cp's OEIS Frontend

A239861 Number of 4Xn 0..3 arrays with no element equal to zero plus the sum of elements to its left or zero plus the sum of the elements above it or one 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 A239861 #6 Jun 02 2025 09:35:22
%S A239861 6,4,84,203,1114,3463,9963,71695,219708,889871,4682227,14101348,
%T A239861 56490669,272270300,908846318,3737847138,17250775307,59577644920,
%U A239861 244962530289,1088932223860,3891762853661,15991497390003,68807314247286
%N A239861 Number of 4Xn 0..3 arrays with no element equal to zero plus the sum of elements to its left or zero plus the sum of the elements above it or one 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 A239861 Row 4 of A239858
%H A239861 R. H. Hardin, <a href="/A239861/b239861.txt">Table of n, a(n) for n = 1..151</a>
%e A239861 Some solutions for n=4
%e A239861 ..3..2..2..2....2..3..3..3....2..3..2..2....3..2..3..2....3..2..3..2
%e A239861 ..2..1..0..0....3..1..1..2....3..1..1..0....2..1..2..3....2..1..2..3
%e A239861 ..3..2..0..0....3..2..2..0....3..2..2..0....3..0..2..2....3..0..2..0
%e A239861 ..2..3..3..3....2..3..0..0....3..1..3..0....2..1..0..2....2..1..0..2
%K A239861 nonn
%O A239861 1,1
%A A239861 _R. H. Hardin_, Mar 28 2014