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A026590 T(2n,n), T given by A026584. 0
1, 1, 5, 19, 69, 341, 1203, 6336, 22593, 121483, 438533, 2381512, 8677763, 47419503, 173984792, 954961034, 3522101709, 19397198595, 71831252031 (list; graph; refs; listen; history; internal format)
OFFSET

0,3

CROSSREFS

Sequence in context: A055991 A030662 A149758 * A095073 A128349 A001834

Adjacent sequences:  A026587 A026588 A026589 * A026591 A026592 A026593

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified February 17 07:41 EST 2012. Contains 205998 sequences.