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A296389 Number of n X n 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 1 or 3 neighboring 1's. 0
1, 6, 36, 597, 21769, 1740403, 313843472, 124433749976, 109752217137032, 214577693619739949, 930506314275700114026, 8950548080850337784771728 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Diagonal of A296396.
LINKS
EXAMPLE
Some solutions for n=5
..0..0..1..0..0. .0..0..1..1..1. .0..0..1..0..0. .1..1..0..0..0
..0..0..1..0..0. .1..0..0..1..1. .0..1..0..0..1. .0..0..0..0..1
..1..1..1..1..0. .1..0..0..0..1. .0..0..0..1..0. .1..0..0..0..1
..0..0..0..0..0. .0..0..0..0..0. .0..1..0..0..1. .1..0..0..0..0
..0..0..0..1..1. .1..1..0..1..1. .0..1..0..1..0. .0..0..1..1..0
CROSSREFS
Cf. A296396.
Sequence in context: A366654 A367488 A339300 * A077290 A222780 A206636
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 11 2017
STATUS
approved

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Last modified March 28 05:39 EDT 2024. Contains 371235 sequences. (Running on oeis4.)