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Search: id:A026977
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A026977 Sum{T(n,k)*T(n,k+1)}, 0<=k<=n-1, T given by A026659. +0
1
1, 4, 24, 90, 365, 1376, 7365, 28002, 121049, 465004, 2437089, 9396986, 41758527, 162167568, 842470494, 3277804402, 14798196587, 57865149612, 299015494394 (list; graph; listen)
OFFSET

1,2
CROSSREFS

Sequence in context: A097875 A026694 A026967 this_sequence A026952 A009769 A119878

Adjacent sequences: A026974 A026975 A026976 this_sequence A026978 A026979 A026980

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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