login
A305012
Number of nX5 0..1 arrays with every element unequal to 1, 2, 4, 5 or 7 king-move adjacent elements, with upper left element zero.
1
3, 51, 99, 255, 2715, 9499, 30457, 225009, 1046863, 4428355, 25786862, 133489800, 644632918, 3500846702, 18523401621, 94736004178, 504816486286, 2678501833047, 14004203659303, 74284132555049, 393952194673461, 2076786525949422
OFFSET
1,1
COMMENTS
Column 5 of A305015.
LINKS
EXAMPLE
Some solutions for n=5
..0..1..0..0..0. .0..0..0..0..0. .0..1..1..0..1. .0..1..1..0..0
..0..1..0..0..1. .1..0..0..1..1. .0..1..1..1..0. .1..0..1..1..1
..0..0..0..0..0. .0..0..0..0..0. .1..1..1..0..0. .1..1..1..1..1
..1..0..0..0..0. .1..0..0..0..0. .0..1..1..0..1. .0..1..1..0..1
..0..0..0..1..0. .0..0..0..1..0. .1..1..1..1..0. .1..1..0..1..1
CROSSREFS
Cf. A305015.
Sequence in context: A316452 A227069 A062216 * A316173 A316645 A116630
KEYWORD
nonn
AUTHOR
R. H. Hardin, May 23 2018
STATUS
approved