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Search: id:A026990
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A026990 a(n) = Sum{(k+1)*T(n,k)}, 0<=k<=n, T given by A026681. +0
1
1, 3, 10, 30, 78, 189, 480, 1242, 3030, 7084, 17112, 42146, 99792, 229065, 540544, 1298851, 3025386, 6871084, 15993500, 37857267, 87275980, 196867143, 454118616, 1064055225, 2435780334, 5468505723, 12533827796, 29153115186 (list; graph; listen)
OFFSET

0,2
CROSSREFS

Sequence in context: A006484 A144007 A026960 this_sequence A027256 A115515 A117869

Adjacent sequences: A026987 A026988 A026989 this_sequence A026991 A026992 A026993

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

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