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Search: id:A027136
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A027136 a(n) = Sum{T(n,k)*T(n,2n-k)}, 0<=k<=n-1, T given by A027113. +0
1
2, 7, 30, 131, 538, 2153, 8441, 32484, 123292, 462673, 1719899, 6343170, 23237876, 84641287, 306758202, 1106900323, 3978716442, 14252356483, 50897604269, 181263039820, 643928439234, 2282348057593, 8072881497390 (list; graph; listen)
OFFSET

1,1
CROSSREFS

Sequence in context: A041805 A074416 A097924 this_sequence A116363 A046648 A006013

Adjacent sequences: A027133 A027134 A027135 this_sequence A027137 A027138 A027139

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified December 7 08:40 EST 2009. Contains 170430 sequences.

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