|
%I #4 Dec 23 2017 15:05:20
%S 1,31,400,2355,36508,732736,11172600,193972861,3611228309,64457269821,
%T 1160327502568,21155577779303,383656455671632,6955900546813945,
%U 126385734152720432,2294982721695823548,41663174884714090303
%N Number of nX7 0..1 arrays with each 1 adjacent to 3, 4 or 6 king-move neighboring 1s.
%C Column 7 of A297020.
%H R. H. Hardin, <a href="/A297019/b297019.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=5
%e ..0..0..1..1..0..1..1. .0..1..1..0..0..1..1. .0..1..1..0..1..1..0
%e ..0..0..1..1..0..1..1. .1..1..1..0..1..1..1. .1..1..0..1..0..1..1
%e ..0..0..1..0..0..0..1. .1..1..0..0..1..0..1. .1..1..1..0..0..0..1
%e ..0..1..1..0..0..1..1. .1..0..1..0..1..1..0. .0..0..0..0..0..1..1
%e ..0..1..1..0..0..1..1. .0..1..1..1..1..0..0. .0..0..0..0..0..1..1
%Y Cf. A297020.
%K nonn
%O 1,2
%A _R. H. Hardin_, Dec 23 2017
| 