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Search: id:A027142
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A027142 a(n) = Sum{T(n,k)*T(n,k+2)}, 0<=k<=2n-2, T given by A027113. +0
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12, 105, 831, 6648, 53545, 434458, 3548871, 29166324, 241006333, 2001145585, 16688238416, 139711675493, 1173762075101, 9892582661593, 83617537623039 (list; graph; listen)
OFFSET

2,1

CROSSREFS

Sequence in context: A051815 A004321 A016223 this_sequence A090816 A144133 A089396

Adjacent sequences: A027139 A027140 A027141 this_sequence A027143 A027144 A027145

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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