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A026748 T(2n,n), T given by A026747. 0
1, 3, 11, 44, 184, 790, 3452, 15278, 68290, 307696, 1395696, 6367199, 29193025, 134442102, 621609060, 2884432810, 13428450520, 62703991531, 293606387095, 1378309455352, 6485734373020, 30586630485443, 144544075759391, 684395988590939 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..23.

CROSSREFS

Sequence in context: A319322 A059714 A059715 * A113174 A132840 A091200

Adjacent sequences:  A026745 A026746 A026747 * A026749 A026750 A026751

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified May 22 07:19 EDT 2019. Contains 323478 sequences. (Running on oeis4.)