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A190532 Number of (n+2)X(n+2) symmetric binary matrices without the pattern 0 1 1 antidiagonally 1
64, 768, 13824, 331776, 11943936, 644972544, 54177693696, 6826389405696, 1351625102327808, 416300531516964864, 203987260443312783360, 157070190541350843187200, 193510474746944238806630400 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
EXAMPLE
Some solutions for 4X4
..1..0..0..1....1..0..0..0....1..0..0..1....1..0..0..0....1..0..0..0
..0..1..0..0....0..0..0..1....0..1..1..0....0..0..0..0....0..0..0..0
..0..0..1..0....0..0..0..1....0..1..1..0....0..0..0..0....0..0..1..1
..1..0..0..0....0..1..1..0....1..0..0..1....0..0..0..0....0..0..1..1
CROSSREFS
Sequence in context: A316882 A317610 A264260 * A181889 A236182 A164280
KEYWORD
nonn
AUTHOR
R. H. Hardin May 12 2011
STATUS
approved

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Last modified April 15 02:01 EDT 2024. Contains 371667 sequences. (Running on oeis4.)