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A299306
Number of nX7 0..1 arrays with every element equal to 1, 2, 3, 5, 6 or 7 king-move adjacent elements, with upper left element zero.
1
8, 2048, 13075, 144040, 3860858, 76611604, 1227812226, 23819382545, 471369052777, 8749447076371, 164571560365968, 3152188315142786, 59832211663862100, 1132092731063667371, 21504285978321722965
OFFSET
1,1
COMMENTS
Column 7 of A299307.
LINKS
EXAMPLE
Some solutions for n=5
..0..1..0..1..0..0..1. .0..1..0..1..1..1..1. .0..1..1..1..0..1..0
..0..1..0..1..1..0..1. .0..1..0..0..1..0..0. .0..1..0..0..0..0..1
..0..1..1..1..1..1..0. .0..1..1..1..1..1..1. .0..1..0..0..0..0..0
..0..1..0..1..1..0..1. .0..1..0..1..1..0..1. .1..0..1..0..0..1..1
..0..0..1..0..0..1..0. .0..0..1..1..0..1..0. .0..0..0..1..1..0..1
CROSSREFS
Cf. A299307.
Sequence in context: A298769 A299566 A298388 * A299464 A300107 A139298
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 06 2018
STATUS
approved