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A294001 Number of linear chord diagrams having n chords and no chord length larger than nine. 2
1, 1, 3, 15, 105, 945, 10395, 135135, 2027025, 34459425, 218243025, 1512548793, 11451456921, 94099903993, 832822929881, 7850100744697, 77247769844585, 766602148661941, 7301487795390325, 63860693057569633, 549669975975395633, 4765146317902742829 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Alois P. Heinz, Table of n, a(n) for n = 0..1000

CROSSREFS

Column k=9 of A293960.

Sequence in context: A293998 A293999 A294000 * A294002 A001147 A000268

Adjacent sequences:  A293998 A293999 A294000 * A294002 A294003 A294004

KEYWORD

nonn,easy

AUTHOR

Alois P. Heinz, Oct 21 2017

STATUS

approved

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Last modified February 24 12:46 EST 2018. Contains 299623 sequences. (Running on oeis4.)