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Search: id:A027909
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A027909 T(2n,n-1), T given by A027907. +0
1
1, 4, 21, 112, 615, 3432, 19383, 110448, 633726, 3656360, 21191555, 123286440, 719539015, 4210967880, 24702429825, 145210795200, 855172338570, 5044470461352 (list; graph; listen)
OFFSET

1,2
CROSSREFS

Sequence in context: A010908 A136786 A026335 this_sequence A127111 A015554 A024051

Adjacent sequences: A027906 A027907 A027908 this_sequence A027910 A027911 A027912

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

page 1

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Last modified September 6 16:04 EDT 2008. Contains 143483 sequences.

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