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Search: id:A027979
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A027979 a(n) = Sum{T(n,k)*T(n,2n-k)}, 0<=k<=n, T given by A027960. +0
1
1, 10, 29, 97, 297, 904, 2685, 7876, 22823, 65533, 186691, 528370, 1486969, 4164382, 11613137, 32264089, 89339325, 246645436, 679111413, 1865340568, 5112351131, 13983383605, 38177371159, 104055773542, 283171508977 (list; graph; listen)
OFFSET

0,2
CROSSREFS

Sequence in context: A048469 A048772 A055850 this_sequence A057456 A002422 A031195

Adjacent sequences: A027976 A027977 A027978 this_sequence A027980 A027981 A027982

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified December 13 23:45 EST 2009. Contains 170824 sequences.

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