login
A297991
Number of nX6 0..1 arrays with every element equal to 1, 2, 3 or 6 king-move adjacent elements, with upper left element zero.
1
5, 573, 1274, 4648, 18189, 74675, 290466, 1134198, 4475863, 17501388, 68447326, 268885391, 1056650444, 4151346258, 16317217303, 64161745436, 252378618258, 993086741498, 3908970841059, 15390703083981, 60613211125295
OFFSET
1,1
COMMENTS
Column 6 of A297993.
LINKS
EXAMPLE
Some solutions for n=6
..0..1..0..1..1..0. .0..1..1..0..0..0. .0..0..0..1..0..0. .0..0..1..0..1..1
..1..0..1..0..1..0. .0..1..0..1..0..1. .1..1..1..0..1..0. .1..0..1..0..1..0
..1..0..1..0..1..0. .0..1..0..1..1..1. .0..0..1..0..1..1. .1..0..1..0..0..0
..0..0..1..0..1..0. .1..1..0..1..0..1. .1..0..1..0..0..1. .1..0..1..0..1..0
..1..0..1..0..1..1. .0..0..0..1..0..1. .1..0..1..1..1..0. .0..0..1..0..1..0
..1..1..0..1..0..0. .1..1..1..1..0..1. .1..0..0..0..0..0. .1..1..0..1..1..0
CROSSREFS
Cf. A297993.
Sequence in context: A274081 A153404 A297821 * A298844 A298651 A299605
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 10 2018
STATUS
approved