The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A000637 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A000637

Number of fixed-point-free permutation groups of degree n.
(history; published version)

#54 by Jon E. Schoenfield at Sat Jan 29 00:59:44 EST 2022

STATUS

editing

approved

#53 by Jon E. Schoenfield at Sat Jan 29 00:59:42 EST 2022

FORMULA

a(n) = A000638(n) - A000638(n-1). - Christian G. Bower, Feb 23 2006

AUTHOR

N. J. A. Sloane.

STATUS

approved

editing

#52 by N. J. A. Sloane at Sun Dec 13 18:40:13 EST 2020

EXTENSIONS

More terms from _Alexander Hulpke (hulpke(AT)math.colostate.edu)_

Discussion

Sun Dec 13

18:40

OEIS Server: https://oeis.org/edit/global/2878

#51 by N. J. A. Sloane at Sun Nov 27 17:58:16 EST 2016

STATUS

editing

approved

#50 by N. J. A. Sloane at Sun Nov 27 17:58:11 EST 2016

LINKS

D. Holt, <a href="/A000019/a000019_1.pdf">Enumerating subgroups of the symmetric group</a>, in Computational Group Theory and the Theory of Groups, II, edited by L.-C. Kappe, A. Magidin and R. Morse. AMS Contemporary Mathematics book series, vol. 511, pp. 33-37. [Annotated copy]

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approved

editing

#49 by Michael Somos at Tue Aug 25 12:40:03 EDT 2015

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editing

approved

#48 by Michael Somos at Tue Aug 25 12:37:32 EDT 2015

FORMULA

A005226 is Euler transform of this sequence. - Michael Somos, Jul 30 2010

STATUS

approved

editing

Discussion

Tue Aug 25

12:39

Michael Somos: Deleted false statement. I probably confused it with A000638 is the EULER transform of A005226. Sorry about that.

#47 by N. J. A. Sloane at Sun Aug 16 17:05:01 EDT 2015

STATUS

editing

approved

#46 by N. J. A. Sloane at Sun Aug 16 17:04:58 EDT 2015

LINKS

G. Butler and J. McKay, <a href="/A000637/a000637_1.pdf">The transitive groups of degree up to eleven</a>, Comm. Algebra, 11 (1983), 863-911. [Annotated scanned copy]

N. J. A. Sloane, <a href="/A000637/a000637_1.pdf">TITLE FOR LINK</a>

STATUS

approved

editing

#45 by N. J. A. Sloane at Sun Aug 16 17:03:01 EDT 2015

STATUS

editing

approved