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A026715 T(2n,n), T given by A026714. 0
1, 3, 13, 63, 319, 1647, 8583, 44941, 235913, 1240173, 6524919, 34346785, 180855499, 952494047, 5017037457, 26428222177, 139223327493, 733452042061, 3864043260671, 20357263645411, 107251092223601, 565050705077767 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..21.

CROSSREFS

Sequence in context: A284160 A092467 A034478 * A001850 A130525 A243280

Adjacent sequences:  A026712 A026713 A026714 * A026716 A026717 A026718

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified February 21 12:10 EST 2018. Contains 299411 sequences. (Running on oeis4.)