The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A273440 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A273440

Number of endofunctions on [n] with exactly nine cycles.
(history; published version)

#6 by Alois P. Heinz at Sun May 29 07:31:31 EDT 2016

STATUS

editing

approved

#5 by Alois P. Heinz at Sun May 29 07:31:27 EDT 2016

NAME

Number of endofunctions on [n] with exactly 9 nine cycles.

STATUS

approved

editing

#4 by Alois P. Heinz at Sun May 22 16:09:06 EDT 2016

STATUS

editing

approved

#3 by Alois P. Heinz at Sun May 22 16:08:57 EDT 2016

LINKS

Alois P. Heinz, <a href="/A273440/b273440.txt">Table of n, a(n) for n = 9..386</a>

#2 by Alois P. Heinz at Sun May 22 14:04:13 EDT 2016

NAME

allocated for Alois P. Heinz

Number of endofunctions on [n] with exactly 9 cycles.

DATA

1, 135, 11715, 848430, 56457258, 3616660047, 228859354295, 14526558274800, 933767559522083, 61157779792168059, 4097522595384976251, 281552808746124677190, 19873435970688901729621, 1442409484607029199323392, 107706418622406296313956423

OFFSET

9,2

FORMULA

E.g.f.: -1/9! * log(1+LambertW(-x))^9.

CROSSREFS

Column k=9 of A060281.

KEYWORD

allocated

nonn

AUTHOR

Alois P. Heinz, May 22 2016

STATUS

approved

editing

#1 by Alois P. Heinz at Sun May 22 13:36:48 EDT 2016

NAME

allocated for Alois P. Heinz

KEYWORD

allocated

STATUS

approved