login
A297368
Number of n X n 0..1 arrays with every 1 horizontally or antidiagonally adjacent to 0, 1 or 2 neighboring 1's.
1
2, 16, 393, 33054, 9554038, 9012089653, 28559447121714, 303815967798840330, 10773278233104610398411, 1277577652466325205472347977, 506760911000629827324155339742511
OFFSET
1,1
COMMENTS
Diagonal of A297374.
LINKS
EXAMPLE
Some solutions for n=5
..0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0
..0..0..0..1..1. .0..0..0..0..0. .0..0..0..1..0. .0..0..0..0..1
..0..0..0..0..1. .0..0..1..0..1. .1..0..1..0..1. .0..0..0..0..1
..0..1..0..1..0. .0..1..0..0..0. .0..1..1..0..0. .1..1..0..1..0
..0..1..0..0..1. .1..0..1..0..1. .0..1..1..0..1. .1..1..0..1..0
CROSSREFS
Cf. A297374.
Sequence in context: A012390 A009613 A012388 * A012752 A188904 A189104
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 29 2017
STATUS
approved