The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A239785 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A239785

Number of pairs of functions (f,g) from a set of n elements into itself satisfying f(g(g(x))) = f(g(x)).
(history; published version)

#9 by Alois P. Heinz at Fri Jul 18 12:29:02 EDT 2014

STATUS

editing

approved

#8 by Alois P. Heinz at Fri Jul 18 12:28:57 EDT 2014

NAME

Number of pairs of functions (f,g) from a set of n elements into itself satisfyi ng satisfying f(g(g(x))) = f(g(x)).

CROSSREFS

Cf. A181162.

KEYWORD

nonn,more,new

STATUS

approved

editing

#7 by N. J. A. Sloane at Fri Jul 18 12:21:38 EDT 2014

NAME

Pairs Number of pairs of functions (f,g) from a size n set of n elements into itself where satisfyi ng f(g(g(x))) = f(g(x)).

Discussion

Fri Jul 18

12:21

OEIS Server: https://oeis.org/edit/global/2252

#6 by N. J. A. Sloane at Fri Jul 18 12:04:57 EDT 2014

STATUS

editing

approved

#5 by Giovanni Resta at Fri Mar 28 13:16:51 EDT 2014

DATA

1, 1, 14, 411, 19912, 1412745, 136537056, 17121680443

EXTENSIONS

a(6)-a(7) from Giovanni Resta, Mar 28 2014

Discussion

Tue Jul 15

18:39

OEIS Server: This sequence has not been edited or commented on for a week
yet is not proposed for review.  If it is ready for review, please
visit https://oeis.org/draft/A239785 and click the button that reads
"These changes are ready for review by an OEIS Editor."

Thanks.
  - The OEIS Server

#4 by Joerg Arndt at Wed Mar 26 14:29:57 EDT 2014

STATUS

proposed

editing

#3 by Chad Brewbaker at Wed Mar 26 14:24:16 EDT 2014

STATUS

editing

proposed

#2 by Chad Brewbaker at Wed Mar 26 14:24:02 EDT 2014

NAME

allocated for Chad BrewbakerPairs of functions from a size n set into itself where f(g(g(x))) = f(g(x)).

DATA

1, 1, 14, 411, 19912, 1412745

OFFSET

0,3

CROSSREFS

A181162

KEYWORD

allocated

nonn

AUTHOR

Chad Brewbaker, Mar 26 2014

STATUS

approved

editing

#1 by Chad Brewbaker at Wed Mar 26 14:24:02 EDT 2014

NAME

allocated for Chad Brewbaker

KEYWORD

allocated

STATUS

approved