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 A293922 Number of linear chord diagrams having n chords and minimal chord length nine. 2
 1, 639, 69676, 4100988, 184283856, 7306919616, 275875184700, 10345618038532, 394140369614751, 15439822086531614, 625906719760828175, 26339564820084748490, 1152078058596976970932, 52386933718575091061064, 2475581777015155231108104, 121493777824620584462513636 (list; graph; refs; listen; history; text; internal format)
 OFFSET 9,2 LINKS Alois P. Heinz, Table of n, a(n) for n = 9..200 FORMULA a(n) ~ (exp(-8) - exp(-9)) * 2^(n + 1/2) * n^n / exp(n). - Vaclav Kotesovec, Oct 25 2017 CROSSREFS Column k=9 of A293881. Sequence in context: A200710 A250661 A250587 * A027885 A097105 A233911 Adjacent sequences: A293919 A293920 A293921 * A293923 A293924 A293925 KEYWORD nonn AUTHOR Alois P. Heinz, Oct 19 2017 STATUS approved

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Last modified May 24 15:54 EDT 2024. Contains 372778 sequences. (Running on oeis4.)