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A027046 Sum{T(n,k)*T(n,n+k)}, 0<=k<=n, T given by A027023. +0
2
1, 2, 5, 16, 65, 286, 1305, 6232, 30377, 150178, 750937, 3785904, 19215865, 98086646, 503087741, 2591128000, 13394476993, 69466312210, 361315132065, 1884242109256, 9849626540337, 51599350440694, 270851460356973 (list; graph; listen)
OFFSET

0,2
CROSSREFS

Sequence in context: A127083 A131178 A003149 this_sequence A000522 A007469 A091139

Adjacent sequences: A027043 A027044 A027045 this_sequence A027047 A027048 A027049

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified November 22 20:51 EST 2009. Contains 167312 sequences.

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