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A047019 T(2n,n), array T given by A047010. 0
1, 1, 3, 15, 91, 521, 3165, 19723, 122915, 777871, 4960453, 31763531, 204603229, 1323059284, 8582389291, 55845106760, 364271278595, 2381222063123, 15596492535183, 102326544493192, 672373002896261, 4424149221222769 (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: A336743 A034954 A077783 * A099251 A171790 A006632

Adjacent sequences:  A047016 A047017 A047018 * A047020 A047021 A047022

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified April 14 12:11 EDT 2021. Contains 342949 sequences. (Running on oeis4.)