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A026696 T(2n-1,n-1), T given by A026692. 0
1, 3, 15, 54, 281, 1069, 5682, 22196, 119437, 473871, 2570259, 10302254, 56189736, 226854572, 1242353004, 5042768384, 27702888589, 112915371783, 621846132945, 2543004195610, 14032879286593, 57541490484761, 318053061106482 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..23.

CROSSREFS

Sequence in context: A085480 A265974 A099581 * A082708 A093925 A117960

Adjacent sequences:  A026693 A026694 A026695 * A026697 A026698 A026699

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified January 17 09:54 EST 2020. Contains 330949 sequences. (Running on oeis4.)