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A135848 Number of steps required for a certain algorithm for producing all permutations of n letters. 0
40, 154, 638, 3194, 19130, 133836, 1070550, 9634750, 96347210, 1059818936, 12717826742 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,1

LINKS

Table of n, a(n) for n=2..12.

R. Sedgewick, Permutation generation methods, Computing Surveys, 9 (1977), 137-164.

CROSSREFS

Sequence in context: A100766 A189541 A201233 * A089548 A282090 A250987

Adjacent sequences:  A135845 A135846 A135847 * A135849 A135850 A135851

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Mar 07 2008

STATUS

approved

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Last modified January 17 23:51 EST 2022. Contains 350410 sequences. (Running on oeis4.)