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A298293
Number of nX7 0..1 arrays with every element equal to 0, 1, 2, 4 or 6 king-move adjacent elements, with upper left element zero.
1
64, 301, 115, 448, 1084, 1798, 4679, 10688, 22503, 53875, 123435, 278930, 642076, 1469878, 3378674, 7738804, 17769468, 40807932, 93610115, 214883906, 493564409, 1132812315, 2601500535, 5974070555, 13717158924, 31501633865, 72344724752
OFFSET
1,1
COMMENTS
Column 7 of A298294.
LINKS
EXAMPLE
Some solutions for n=7
..0..1..0..1..0..0..1. .0..0..1..1..1..0..0. .0..0..0..1..1..0..1
..0..0..1..0..1..1..0. .1..1..0..0..0..1..1. .1..0..0..0..0..1..1
..0..0..0..0..1..1..0. .0..1..1..1..1..1..0. .1..0..0..1..1..1..1
..1..0..0..1..0..0..1. .0..1..0..0..0..1..0. .0..1..1..1..1..1..0
..0..0..1..0..0..1..0. .0..1..1..1..1..1..0. .0..1..1..1..0..0..0
..0..0..0..0..0..0..1. .1..1..0..0..0..1..1. .0..1..0..0..0..0..0
..1..0..0..1..0..0..0. .0..0..1..1..1..0..0. .1..1..0..1..1..1..0
CROSSREFS
Cf. A298294.
Sequence in context: A297699 A297888 A298493 * A299387 A299186 A299947
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 16 2018
STATUS
approved