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A297768
Number of 7Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 2, 3 or 4 neighboring 1s.
1
1, 69, 28565, 720785, 18733087, 1504842706, 108229776807, 5471123716394, 286817881089193, 17003133505644511, 992034690844277806, 55560988268455263857, 3131312608795918940918, 178941939002152696425045
OFFSET
1,2
COMMENTS
Row 7 of A297762.
LINKS
EXAMPLE
Some solutions for n=3
..0..1..1. .1..1..0. .0..1..0. .1..1..0. .0..1..0. .1..1..0. .0..0..0
..0..1..1. .1..1..1. .1..0..1. .1..1..0. .1..1..1. .0..1..1. .1..1..0
..0..1..1. .0..0..0. .0..1..0. .1..1..0. .1..0..0. .0..0..0. .1..1..0
..0..1..1. .0..0..0. .0..0..0. .1..1..1. .1..1..1. .0..0..0. .0..1..1
..0..1..1. .1..1..1. .0..0..0. .0..1..1. .0..1..1. .1..1..0. .1..0..0
..0..1..1. .0..1..1. .0..1..1. .1..1..0. .1..1..0. .0..1..1. .1..1..1
..0..1..1. .1..1..0. .1..1..1. .1..1..1. .1..1..1. .0..0..0. .0..1..1
CROSSREFS
Cf. A297762.
Sequence in context: A297807 A251002 A194612 * A268847 A211212 A175049
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 05 2018
STATUS
approved