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

 

Logo

The submissions stack has been unacceptably high for several months now. Please voluntarily restrict your submissions and please help with the editing. (We don't want to have to impose further limits.)

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A185252 Sum(k=0...ceil(n/2), k*C(n,k)) 0
0, 1, 2, 9, 16, 55, 96, 294, 512, 1467, 2560, 7018, 12288, 32630, 57344, 148620, 262144, 666451, 1179648, 2952258, 5242880, 129, 49986, 23068672, 56346964, 100663296, 243517150, 436207616, 1046377764, 1879048192, 4474004812, 8053063680, 19047319832, 34359738368 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..33.

FORMULA

a(2n)=A185251(2n)

PROG

(PARI) a(n)=sum(k=0, (n+1)\2, k*binomial(n, k))

CROSSREFS

Sequence in context: A178440 A097965 A075645 * A055259 A032299 A032211

Adjacent sequences:  A185249 A185250 A185251 * A185253 A185254 A185255

KEYWORD

nonn,easy

AUTHOR

M. F. Hasler, Jan 24 2012

STATUS

approved

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

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

Last modified August 28 15:16 EDT 2015. Contains 261125 sequences.