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A298138
Number of nX7 0..1 arrays with every element equal to 2, 3, 5 or 7 king-move adjacent elements, with upper left element zero.
1
0, 34, 6, 185, 627, 3417, 14422, 73961, 354200, 1772595, 8807624, 44087860, 218942205, 1093100404, 5447861031, 27173970577, 135547796845, 676389434363, 3374295032672, 16836823878509, 84007635799139, 419167042007303
OFFSET
1,2
COMMENTS
Column 7 of A298139.
LINKS
EXAMPLE
Some solutions for n=7
..0..0..1..0..1..1..1. .0..0..0..1..1..0..0. .0..0..1..0..0..1..1
..0..1..0..1..0..0..1. .1..0..1..1..0..1..0. .0..1..1..1..0..0..1
..0..1..0..1..0..1..0. .1..1..1..1..0..0..1. .1..0..0..0..1..0..1
..0..1..0..1..0..1..0. .1..0..0..1..1..1..1. .0..1..1..0..1..0..1
..0..1..0..1..0..1..0. .1..0..1..0..1..1..0. .0..0..1..0..1..0..1
..0..1..1..0..1..0..1. .0..1..1..0..1..0..0. .1..0..1..0..1..0..1
..0..0..0..0..0..1..1. .0..0..0..1..1..1..0. .1..1..0..1..0..1..1
CROSSREFS
Cf. A298139.
Sequence in context: A037933 A350936 A297875 * A350935 A350132 A350934
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 13 2018
STATUS
approved