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A026705 T(2n,n-1), T given by A026703. 0
1, 6, 31, 155, 767, 3780, 18595, 91393, 448981, 2205125, 10828709, 53172183, 261078623, 1281874806, 6293791663, 30901142675, 151716892649, 744889168771, 3657197145041, 17955788884557, 88157703490061, 432828510306195 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..22.

CROSSREFS

Sequence in context: A056015 A128740 A227505 * A243874 A003463 A026771

Adjacent sequences:  A026702 A026703 A026704 * A026706 A026707 A026708

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified March 23 02:53 EDT 2019. Contains 321422 sequences. (Running on oeis4.)