A306052 - OEIS

%I #4 Jun 18 2018 07:39:29

%S 64,719,3826,22446,321707,3914486,36596835,458669749,5842600934,

%T 66568698945,798332516282,9821492891496,117262506186344,

%U 1405851087491116,17027654495622693,205003745530369522,2465103157587732737

%N Number of nX7 0..1 arrays with every element unequal to 0, 1, 2, 3, 6 or 7 king-move adjacent elements, with upper left element zero.

%C Column 7 of A306053.

%H R. H. Hardin, <a href="/A306052/b306052.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A306053.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jun 18 2018