|
%I #4 May 17 2018 10:01:13
%S 2,10,21,48,215,798,3055,9810,41744,159183,570536,2308616,8872579,
%T 33367632,131450744,506761978,1940496321,7558901654,29184688564,
%U 112473463039,436144732416,1685260077151,6509144124179,25196323364937
%N Number of nX4 0..1 arrays with every element unequal to 1, 2, 4, 5 or 6 king-move adjacent elements, with upper left element zero.
%C Column 4 of A304704.
%H R. H. Hardin, <a href="/A304700/b304700.txt">Table of n, a(n) for n = 1..210</a>
%H R. H. Hardin, <a href="/A304700/a304700.txt">Empirical recurrence of order 67</a>
%F Empirical recurrence of order 67 (see link above)
%e Some solutions for n=5
%e ..0..0..0..0. .0..0..1..0. .0..0..1..0. .0..0..0..1. .0..1..0..0
%e ..1..1..0..1. .1..0..0..1. .1..0..0..1. .0..1..1..1. .1..0..0..1
%e ..1..1..1..0. .0..0..0..0. .0..0..0..0. .0..0..1..0. .0..0..0..0
%e ..0..1..1..1. .0..0..0..0. .1..0..0..1. .1..0..1..0. .1..0..0..1
%e ..1..1..0..1. .0..1..1..0. .0..0..0..1. .0..1..1..1. .0..0..1..0
%Y Cf. A304704.
%K nonn
%O 1,1
%A _R. H. Hardin_, May 17 2018
| 