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Search: id:A026978
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A026978 a(n) = Sum{T(n,k)*T(n,k+2)}, 0<=k<=n-2, T given by A026659. +0
1
1, 8, 41, 208, 856, 4540, 18527, 86896, 343976, 1794146, 7114521, 33019048, 129946039, 674164700, 2656947487, 12352433072, 48571744683, 251186392774, 988685996629 (list; graph; listen)
OFFSET

2,2

CROSSREFS

Sequence in context: A156790 A080840 A026968 this_sequence A037577 A051737 A026953

Adjacent sequences: A026975 A026976 A026977 this_sequence A026979 A026980 A026981

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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