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A304150 Number of n X n 0..1 arrays with every element unequal to 2, 3, 4 or 6 king-move adjacent elements, with upper left element zero. 0
0, 3, 4, 346, 13279, 1100030, 217640633, 80851458613, 58581875264320 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Diagonal of A304156.
LINKS
EXAMPLE
Some solutions for n=5
..0..1..0..1..0. .0..1..0..0..1. .0..1..0..1..1. .0..1..0..1..0
..1..0..0..1..0. .1..1..1..1..0. .1..0..0..0..0. .1..1..0..1..0
..0..0..0..0..1. .0..0..1..1..1. .1..0..0..0..1. .0..0..0..0..1
..0..1..0..0..1. .0..1..1..0..0. .0..1..0..1..0. .0..0..0..1..0
..1..0..1..1..0. .1..0..1..0..1. .1..0..0..1..0. .1..1..0..1..0
CROSSREFS
Cf. A304156.
Sequence in context: A195566 A348278 A348280 * A305505 A069970 A305169
KEYWORD
nonn
AUTHOR
R. H. Hardin, May 07 2018
STATUS
approved

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Last modified March 1 11:13 EST 2024. Contains 370432 sequences. (Running on oeis4.)