A298634 - OEIS

%I #4 Jan 23 2018 12:43:01

%S 1,94,21,81,107,246,462,991,1953,4272,9838,22598,52716,122648,291782,

%T 694686,1655782,3946960,9422118,22546272,53963889,129254366,309752937,

%U 742752613,1781632012,4274164398,10255665681,24611457341,59070424950

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

%C Column 7 of A298635.

%H R. H. Hardin, <a href="/A298634/b298634.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A298635.

%K nonn

%O 1,2

%A _R. H. Hardin_, Jan 23 2018