login
A304774
Number of nX7 0..1 arrays with every element unequal to 0, 1, 2, 3 or 7 king-move adjacent elements, with upper left element zero.
1
64, 719, 685, 2710, 15349, 100581, 540901, 3257711, 19908669, 116435693, 698092944, 4184600633, 24873061228, 148660385563, 888008033892, 5296140822230, 31624461255154, 188795531935106, 1126779295822655
OFFSET
1,1
COMMENTS
Column 7 of A304775.
LINKS
EXAMPLE
Some solutions for n=5
..0..0..0..0..0..0..1. .0..1..1..1..1..1..0. .0..0..1..1..1..1..1
..0..0..0..0..0..0..1. .1..1..0..0..1..1..1. .0..1..1..1..0..0..1
..0..1..0..0..0..0..1. .1..1..1..1..1..0..1. .1..1..1..1..1..1..1
..0..0..1..0..0..1..0. .1..1..1..1..0..1..1. .1..1..1..1..0..1..1
..1..0..0..0..0..0..0. .1..1..1..1..1..1..0. .0..0..0..0..1..1..1
CROSSREFS
Cf. A304775.
Sequence in context: A372844 A303726 A305229 * A316517 A304471 A316288
KEYWORD
nonn
AUTHOR
R. H. Hardin, May 18 2018
STATUS
approved