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A047129 T(2n,n), array T as in A047120. 0
1, 1, 6, 28, 166, 971, 5937, 36736, 230363, 1458037, 9292357, 59576614, 383721187, 2481397399, 16099317872, 104753149406, 683279530195, 4466548322041, 29253296829696, 191917744224242, 1260998821726319, 8296736705457073 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

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

CROSSREFS

Sequence in context: A163029 A309490 A045722 * A173081 A278015 A169723

Adjacent sequences:  A047126 A047127 A047128 * A047130 A047131 A047132

KEYWORD

nonn

AUTHOR

Clark Kimberling. Definition revised Dec 08 2006

STATUS

approved

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Last modified September 23 04:54 EDT 2020. Contains 337295 sequences. (Running on oeis4.)