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A013549 Incorrect version of A000085. 0
1, 2, 4, 10, 41, 76 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Appears on page 2, Figure 2 (left column) of the reference; Corrollary 1.6 (page 17) says that the permutations counted are involutions. - Sean A. Irvine, Aug 08 2018

LINKS

Table of n, a(n) for n=1..6.

Frank Schmidt and Rodica Simion, Card shuffling and a transformation on S_n, Aequationes Math. 44 (1992), no. 1, 11-34.

CROSSREFS

Sequence in context: A322698 A153757 A159860 * A184253 A174136 A125805

Adjacent sequences: A013546 A013547 A013548 * A013550 A013551 A013552

KEYWORD

nonn,dead

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified December 7 04:29 EST 2022. Contains 358649 sequences. (Running on oeis4.)