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A296506 Number of generalized knockout tournament seedings with 3 players in each match and n rounds. 1
1, 280, 833712928048000000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Next term is too large to include.

LINKS

Table of n, a(n) for n=1..3.

Alexander Karpov, Generalized knockout tournaments, National Research University Higher School of Economics. WP7/2017/03.

Alexander Karpov, Generalized knockout tournaments.

FORMULA

a(n) = (3^n)!/6^((3^n-1)/2).

MATHEMATICA

f[n_] := (3^n)!/6^((3^n - 1)/2); Array[f, 3] (* Robert G. Wilson v, Dec 27 2017 *)

CROSSREFS

Cf. A067667 (number of knockout tournament seedings with two players in each match).

Sequence in context: A091034 A294165 A259079 * A308456 A175145 A142444

Adjacent sequences:  A296503 A296504 A296505 * A296507 A296508 A296509

KEYWORD

nonn

AUTHOR

Alexander Karpov, Dec 13 2017

STATUS

approved

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Last modified January 26 14:08 EST 2020. Contains 331280 sequences. (Running on oeis4.)