cp's OEIS Frontend

A240762 Number of 3Xn 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 zero plus the sum of the elements antidiagonally to its northeast, modulo 4.

%I A240762 #6 Jun 02 2025 09:59:47
%S A240762 4,12,19,142,553,4112,18373,131958,625820,4472258,21760942,154039075,
%T A240762 763999159,5342021291,26913960199,185826785482,949177894331,
%U A240762 6473768540990,33478372193270,225722723781992,1180496482754391
%N A240762 Number of 3Xn 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 zero plus the sum of the elements antidiagonally to its northeast, modulo 4.
%C A240762 Row 3 of A240760
%H A240762 R. H. Hardin, <a href="/A240762/b240762.txt">Table of n, a(n) for n = 1..70</a>
%e A240762 Some solutions for n=4
%e A240762 ..3..3..1..3....3..1..3..3....3..3..1..1....2..1..2..3....2..2..2..1
%e A240762 ..2..2..0..2....2..2..2..2....2..0..2..2....3..3..0..1....3..1..3..3
%e A240762 ..2..0..0..2....2..0..0..2....2..1..1..2....2..2..3..3....2..2..0..2
%K A240762 nonn
%O A240762 1,1
%A A240762 _R. H. Hardin_, Apr 12 2014