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A297589
Number of n X n 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1 or 5 neighboring 1's.
0
1, 5, 25, 154, 3747, 163704, 9403199, 1120526916, 303459238317, 138838185786076, 112146192906098209, 184312505263036081408, 579679725644521049265576, 3298268036530237426659387766
OFFSET
1,2
COMMENTS
Diagonal of A297595.
EXAMPLE
Some solutions for n=6
..0..1..1..0..1..1. .0..0..0..0..0..0. .0..0..0..0..1..0. .0..0..0..0..0..0
..0..0..0..0..0..0. .1..0..1..0..1..1. .0..1..1..0..0..1. .0..0..0..1..1..0
..1..1..0..0..0..0. .1..1..0..0..0..0. .0..0..0..0..0..0. .1..1..0..0..0..0
..0..0..0..0..0..0. .1..0..1..0..0..0. .1..0..0..0..0..0. .0..0..0..0..0..1
..1..0..0..0..1..0. .1..0..0..0..0..0. .0..1..0..0..1..1. .0..0..0..0..1..0
..0..1..0..0..0..1. .0..1..0..1..1..0. .0..0..0..0..0..0. .0..1..1..0..0..0
CROSSREFS
Cf. A297595.
Sequence in context: A200031 A374984 A216689 * A092166 A204209 A121112
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 01 2018
STATUS
approved