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A026683 T(2n,n-1), T given by A026681. 0
1, 7, 26, 150, 561, 3181, 12101, 68514, 263959, 1496375, 5818228, 33039504, 129350028, 735726968, 2895663570, 16493980890, 65189381839, 371790856907, 1474431012804, 8418159673710, 33478067835325, 191320477252349, 762651878154895 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

CROSSREFS

Sequence in context: A027138 A050476 A026617 * A197053 A009375 A009380

Adjacent sequences:  A026680 A026681 A026682 * A026684 A026685 A026686

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified February 14 06:20 EST 2012. Contains 205570 sequences.