login
A298664
Number of nX5 0..1 arrays with every element equal to 0, 3, 4, 6 or 7 king-move adjacent elements, with upper left element zero.
1
1, 2, 5, 2, 20, 38, 84, 319, 770, 2106, 6301, 17282, 47774, 137186, 386924, 1083606, 3099891, 8800002, 24988837, 71554943, 204638340, 586541392, 1687246083, 4861247458, 14034796678, 40624856818, 117836193317, 342470517019
OFFSET
1,2
COMMENTS
Column 5 of A298667.
LINKS
EXAMPLE
Some solutions for n=8
..0..1..1..1..0. .0..0..0..0..0. .0..1..0..1..0. .0..1..1..1..0
..1..1..0..1..1. .0..0..1..0..0. .1..1..1..1..1. .1..1..0..1..1
..1..0..0..0..1. .1..1..1..1..1. .1..1..1..1..1. .1..1..1..1..1
..1..1..0..1..1. .1..1..1..1..1. .0..1..1..0..1. .0..1..1..0..1
..1..0..0..0..1. .0..1..1..0..1. .1..1..1..1..1. .1..1..1..1..1
..1..0..0..0..1. .1..1..1..1..1. .0..1..1..1..0. .1..0..1..1..0
..1..1..0..1..1. .1..1..1..1..1. .1..1..0..1..1. .1..1..1..1..1
..0..1..1..1..0. .0..1..0..1..0. .1..1..1..1..1. .1..1..0..1..1
CROSSREFS
Cf. A298667.
Sequence in context: A257514 A089120 A286452 * A319201 A019295 A364820
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 24 2018
STATUS
approved