A305915 - OEIS

%I #4 Jun 14 2018 07:06:18

%S 8,57,62,347,2014,8135,57465,489154,3344053,25522176,209490803,

%T 1611464796,12539285595,99907700990,785210139974,6162648831419,

%U 48680431762971,383689003675080,3020361523395059,23812409080409828

%N Number of nX5 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 5 of A305918.

%H R. H. Hardin, <a href="/A305915/b305915.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

%e ..0..0..0..0..1. .0..1..0..0..1. .0..1..0..1..0. .0..0..0..1..1

%e ..0..0..0..1..1. .0..0..0..0..0. .1..1..0..0..0. .1..0..0..0..1

%e ..0..0..1..1..1. .0..0..0..0..0. .0..0..1..1..1. .0..0..0..0..0

%e ..1..0..1..1..1. .0..0..1..0..0. .1..1..0..0..1. .1..1..1..1..1

%e ..0..0..1..0..1. .1..0..1..0..1. .1..0..0..0..0. .1..0..1..1..0

%Y Cf. A305918.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jun 14 2018