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A282878 Number of n X n 0..1 arrays with no 1 equal to more than one of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly one element. 0
0, 2, 74, 3762, 480995, 128768496, 79687436788, 115172557654616, 393143666098549156, 3196549492640753656296, 62216948503916625663186184 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Diagonal of A282885.
LINKS
EXAMPLE
Some solutions for n=4
..1..0..0..1. .0..1..0..0. .1..0..1..0. .1..0..1..0. .1..0..0..1
..1..0..1..0. .1..0..1..0. .0..1..0..0. .0..0..1..0. .0..0..0..1
..0..1..0..0. .1..0..0..1. .0..0..0..1. .0..1..0..1. .1..0..0..0
..0..0..0..0. .0..1..0..0. .0..1..1..0. .0..0..0..0. .0..1..1..1
CROSSREFS
Cf. A282885.
Sequence in context: A295172 A351589 A322281 * A062552 A116172 A358383
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 24 2017
STATUS
approved

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Last modified June 14 01:54 EDT 2024. Contains 373391 sequences. (Running on oeis4.)