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Search: id:A027225
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A027225 a(n) = Sum{T(n,k)*T(n,k+2), 0<=k<=n-2, T given by A026747. +0
1
1, 8, 52, 247, 1416, 6056, 33731, 139016, 770116, 3121259, 17335095, 69642995, 388958218, 1554558921, 8740670953, 34818606079, 197136480944, 783522002716 (list; graph; listen)
OFFSET

2,2

CROSSREFS

Sequence in context: A026963 A026973 A107584 this_sequence A073377 A055283 A022732

Adjacent sequences: A027222 A027223 A027224 this_sequence A027226 A027227 A027228

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified November 21 14:49 EST 2008. Contains 150807 sequences.


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