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A026577 T(2n-1,n-1), T given by A026568. 0
1, 2, 8, 34, 121, 606, 2155, 11306, 40717, 217666, 792351, 4280046, 15703156, 85410872, 315180458, 1722900242, 6385672193, 35040356022 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..18.

CROSSREFS

Sequence in context: A263627 A172448 A268601 * A204090 A226495 A111643

Adjacent sequences:  A026574 A026575 A026576 * A026578 A026579 A026580

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified October 22 22:58 EDT 2018. Contains 316518 sequences. (Running on oeis4.)