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Search: id:A026980
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A026980 a(n) = Sum{(k+1)*T(n,k)}, 0<=k<=n, T given by A026659. +0
1
1, 3, 8, 25, 60, 147, 336, 882, 1960, 4631, 10104, 25207, 54292, 125895, 268576, 653191, 1383228, 3172981, 6679960, 15996204, 33515856, 76350225, 159339600, 377580850, 785368168, 1780545051, 3692982328, 8684805392, 17968562880 (list; graph; listen)
OFFSET

0,2
CROSSREFS

Sequence in context: A057420 A076049 A026970 this_sequence A026955 A093900 A018789

Adjacent sequences: A026977 A026978 A026979 this_sequence A026981 A026982 A026983

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified December 4 23:11 EST 2009. Contains 170347 sequences.

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