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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

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Last modified August 27 15:13 EDT 2014. Contains 246143 sequences.