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A027080 Sum{T(n,k)*T(n,k+2)}, 0<=k<=2n-2, T given by A027052. +0
1
2, 15, 100, 757, 5902, 46907, 377520, 3065809, 25078650, 206416795, 1708129244, 14202265321, 118585167502, 993915161547, 8358970631568, 70518298143329, 596590060985546 (list; graph; listen)
OFFSET

2,1
CROSSREFS

Sequence in context: A037627 A037753 A037641 this_sequence A081018 A006675 A037524

Adjacent sequences: A027077 A027078 A027079 this_sequence A027081 A027082 A027083

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified July 19 08:04 EDT 2008. Contains 142098 sequences.

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