login
Number of nX7 0..1 arrays with every element equal to 0, 1, 2, 3, 5, 6 or 8 king-move adjacent elements, with upper left element zero.
1

%I #4 Feb 18 2018 10:32:37

%S 64,3440,24838,358219,7443583,109073249,1686794332,28696396155,

%T 463029637815,7465606812694,122633805906241,2000714756289937,

%U 32584371200903888,532439043152901356,8693920144556156550

%N Number of nX7 0..1 arrays with every element equal to 0, 1, 2, 3, 5, 6 or 8 king-move adjacent elements, with upper left element zero.

%C Column 7 of A299753.

%H R. H. Hardin, <a href="/A299752/b299752.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A299753.

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 18 2018