|
%I #4 Mar 22 2018 11:46:56
%S 8,50,148,599,2354,9415,38558,158994,657238,2721509,11274883,46736042,
%T 193836729,804279754,3338261393,13859019181,57545314726,238962743161,
%U 992381007429,4121406272689,17116902820124,71090859437426
%N Number of nX4 0..1 arrays with every element equal to 0, 1, 2, 4, 5 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
%C Column 4 of A301491.
%H R. H. Hardin, <a href="/A301487/b301487.txt">Table of n, a(n) for n = 1..210</a>
%H R. H. Hardin, <a href="/A301487/a301487.txt">Empirical recurrence of order 89</a>
%F Empirical recurrence of order 89 (see link above)
%e Some solutions for n=5
%e ..0..1..0..1. .0..0..1..1. .0..1..0..1. .0..0..1..0. .0..0..0..1
%e ..0..1..0..1. .1..0..1..0. .1..1..1..0. .0..1..1..1. .0..0..1..0
%e ..0..1..0..1. .1..1..1..1. .0..1..1..1. .1..1..0..0. .0..0..0..0
%e ..0..1..0..1. .0..1..0..1. .0..1..0..1. .0..1..1..1. .0..0..0..0
%e ..0..1..0..0. .0..0..1..0. .0..0..1..0. .0..0..0..0. .0..1..1..1
%Y Cf. A301491.
%K nonn
%O 1,1
%A _R. H. Hardin_, Mar 22 2018
| 