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A297332
Number of n X n 0..1 arrays with every 1 horizontally or antidiagonally adjacent to 0 or 2 neighboring 1's.
1
2, 8, 96, 2119, 130297, 16277492, 5193690642, 3603917287497, 6073485212079264, 23075270570489849128, 207672501598695910705310, 4285665784382445160009080062, 207135689108669020537324268900868
OFFSET
1,1
COMMENTS
Diagonal of A297338.
LINKS
EXAMPLE
Some solutions for n=5
..1..0..0..0..1. .1..0..0..0..1. .0..0..1..0..0. .0..0..0..0..1
..1..0..0..0..1. .0..0..0..0..0. .0..0..0..0..0. .0..0..1..0..1
..0..0..0..0..0. .1..0..0..1..1. .1..0..1..1..0. .0..0..0..0..1
..0..0..1..0..0. .1..0..1..1..0. .0..1..1..0..1. .1..0..1..0..1
..1..0..0..0..0. .1..0..0..0..1. .0..0..1..0..0. .0..0..1..0..1
CROSSREFS
Cf. A297338.
Sequence in context: A052713 A136797 A255132 * A009752 A322736 A137704
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 28 2017
STATUS
approved