|
%I #4 Jun 14 2018 07:07:55
%S 21,289,312,4982,57465,811996,18643274,371733699,6830409319,
%T 143897189930,2971442216847,59080121487287,1211031708383269,
%U 24872652363493440,504919099584347536,10304854339183282114,210797145712163688250
%N Number of nX7 0..1 arrays with every element unequal to 0, 1, 3, 4, 5 or 7 king-move adjacent elements, with upper left element zero.
%C Column 7 of A305918.
%H R. H. Hardin, <a href="/A305917/b305917.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=5
%e ..0..0..1..0..1..0..1. .0..0..1..1..0..1..0. .0..1..1..0..0..1..1
%e ..0..0..0..1..0..1..1. .0..0..0..1..0..1..1. .0..0..1..0..1..1..1
%e ..0..0..0..1..1..0..0. .1..0..1..0..1..0..0. .1..1..0..0..0..1..0
%e ..0..0..1..1..0..1..0. .1..1..1..0..1..0..1. .1..0..1..0..0..1..1
%e ..1..0..1..0..0..1..1. .1..1..1..1..1..0..0. .1..1..1..0..1..1..1
%Y Cf. A305918.
%K nonn
%O 1,1
%A _R. H. Hardin_, Jun 14 2018
| 