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Search: id:A027073
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A027073 a(n) = Sum{T(n,k)*T(n,2n-k)}, 0<=k<=n, T given by A027052. +0
1
1, 1, 2, 8, 31, 129, 510, 1970, 7513, 28253, 105176, 388330, 1423691, 5188577, 18812848, 67907520, 244160177, 874821817, 3124747792, 11130097846, 39544807851, 140180597013, 495886522916, 1750852227736, 6171019594129 (list; graph; listen)
OFFSET

0,3
CROSSREFS

Adjacent sequences: A027070 A027071 A027072 this_sequence A027074 A027075 A027076

Sequence in context: A062456 A077838 A018916 this_sequence A027078 A009567 A003175

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified October 10 20:39 EDT 2008. Contains 144831 sequences.

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