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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A046706 (1/2)*(n+1)!*Sum( n^(2k+1)/(2k+1)!, k=0..n/2). 0
0, 1, 10, 90, 1392, 18675, 409104, 7411348, 209085952, 4788571365, 164757984000, 4571341663086, 185247857018880, 6045063784869655, 281596888593405952, 10574853536725785000, 556202715633735696384, 23639922913364842592457 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..17.

MATHEMATICA

Table[(n+1)!/2 Sum[n^(2k+1)/(2k+1)!, {k, 0, Floor[n/2]}], {n, 0, 20}] (* Harvey P. Dale, Mar 05 2013 *)

CROSSREFS

Sequence in context: A218127 A322647 A243106 * A116348 A043088 A175710

Adjacent sequences:  A046703 A046704 A046705 * A046707 A046708 A046709

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified August 20 15:13 EDT 2019. Contains 326152 sequences. (Running on oeis4.)