|
%I #4 Apr 25 2018 12:30:30
%S 8,81,420,1596,7951,43448,222205,1111647,5678762,29269343,150041512,
%T 767385774,3932021861,20164462418,103363694493,529734973779,
%U 2715304606630,13919219193295,71350445359330,365738495870594
%N Number of 4Xn 0..1 arrays with every element equal to 0, 1, 2, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
%C Row 4 of A303513.
%H R. H. Hardin, <a href="/A303515/b303515.txt">Table of n, a(n) for n = 1..210</a>
%H R. H. Hardin, <a href="/A303515/a303515.txt">Empirical recurrence of order 63</a>
%F Empirical recurrence of order 63 (see link above)
%e Some solutions for n=5
%e ..0..1..1..0..0. .0..1..1..1..0. .0..1..0..1..0. .0..0..0..1..1
%e ..1..0..0..0..1. .0..0..0..0..0. .0..1..0..1..1. .0..1..0..1..0
%e ..1..0..1..0..1. .0..1..0..1..1. .0..0..1..0..0. .0..0..0..1..1
%e ..0..0..1..0..0. .0..0..0..0..1. .0..1..0..1..0. .1..1..1..0..0
%Y Cf. A303513.
%K nonn
%O 1,1
%A _R. H. Hardin_, Apr 25 2018
| 