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A295710 Number of n X n 0..1 arrays with each 1 horizontally or vertically adjacent to 0, 1, 2 or 4 1's. 0
2, 16, 385, 31985, 9056598, 8705322572, 28373170135641, 313669710008734662, 11762368573382093623080, 1496099103269907922278909905, 645462222454558476245469903282979 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Diagonal of A295716.
LINKS
EXAMPLE
Some solutions for n=4
..0..0..0..0. .1..1..1..1. .0..0..0..0. .1..1..0..1. .0..0..1..1
..0..1..0..0. .0..0..0..0. .1..1..1..1. .0..0..1..0. .0..1..1..0
..1..1..1..1. .1..0..1..0. .1..0..0..0. .0..0..0..1. .0..0..0..0
..0..1..0..1. .1..1..0..1. .0..1..0..0. .0..0..0..1. .0..0..0..1
CROSSREFS
Cf. A295716.
Sequence in context: A002474 A172149 A340563 * A012390 A009613 A012388
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 26 2017
STATUS
approved

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Last modified April 20 03:03 EDT 2024. Contains 371798 sequences. (Running on oeis4.)