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A288965 Number of key comparisons to sort all n! permutations of n elements by the optimal dual-pivot quicksort. 4
0, 0, 2, 16, 114, 866, 7188, 65580, 655872, 7157376, 84775680, 1084343040, 14906039040, 219267751680, 3437854963200, 57247256424960, 1009189972869120, 18779054120386560, 367876307230064640, 7568437652936294400, 163164173556503347200, 3678547646214424166400 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Daniel Krenn, Table of n, a(n) for n = 0..100

M. Aumüller, M. Dietzfelbinger, C. Heuberger, D. Krenn, H. Prodinger, Dual-Pivot Quicksort: Optimality, Analysis and Zeros of Associated Lattice Paths, arXiv:1611.00258 [math.CO], 2016.

Index entries for sequences related to sorting

CROSSREFS

Cf. A288964.

Sequence in context: A288970 A037564 A125725 * A207420 A207736 A208364

Adjacent sequences:  A288962 A288963 A288964 * A288966 A288967 A288968

KEYWORD

nonn

AUTHOR

Daniel Krenn, Jun 20 2017

STATUS

approved

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Last modified January 19 14:53 EST 2020. Contains 331049 sequences. (Running on oeis4.)