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A026627 T(2n,n), T given by A026626. 0
1, 3, 8, 28, 98, 354, 1300, 4834, 18142, 68578, 260720, 995856, 3818644, 14690940, 56677652, 219195454, 849523318, 3298629106, 12829651312, 49973834584, 194917940188, 761178474076, 2975764881352, 11645184195364 (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: A148864 A148865 A203152 * A148866 A327015 A151431

Adjacent sequences:  A026624 A026625 A026626 * A026628 A026629 A026630

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified January 22 21:15 EST 2022. Contains 350504 sequences. (Running on oeis4.)