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A223675 Number of n X n 0..1 arrays with rows and antidiagonals unimodal 0
2, 16, 316, 9822, 384009, 17068664, 821284360, 41697505423, 2202335611907, 120016210924727, 6715040320826544, 384617913213951506, 22513060559771644440, 1345458233683987073442, 82071805127975022481091 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Diagonal of A223680
LINKS
EXAMPLE
Some solutions for n=3
..1..1..1....1..1..0....0..1..1....0..0..1....0..1..0....0..1..0....0..1..1
..0..1..1....1..1..0....1..1..0....1..1..1....1..1..1....0..0..0....1..0..0
..0..0..1....0..1..1....1..1..1....0..1..0....0..0..0....0..1..1....0..0..0
CROSSREFS
Sequence in context: A174487 A140051 A264658 * A189058 A189189 A188867
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 25 2013
STATUS
approved

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Last modified April 19 13:40 EDT 2024. Contains 371792 sequences. (Running on oeis4.)