login
This site is supported by donations to The OEIS Foundation.
Logo

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A074728 Sum_{k=1..n} k^(n-k)*binomial(n,k-1). 1
1, 3, 10, 39, 176, 903, 5174, 32623, 223792, 1655463, 13110758, 110510007, 986490272, 9287036671, 91872460702, 952034494431, 10305790066208, 116254839687543, 1363631057783942, 16599343732844455, 209328335818064176 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

FORMULA

E.g.f.: (exp(x*exp(x))-exp(x))/x.

CROSSREFS

Cf. A000248.

Sequence in context: A205543 A137590 A124532 * A087860 A054912 A093463

Adjacent sequences:  A074725 A074726 A074727 * A074729 A074730 A074731

KEYWORD

nonn

AUTHOR

Vladeta Jovovic (vladeta(AT)eunet.rs), Sep 05 2002

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified February 14 18:47 EST 2012. Contains 205663 sequences.