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A047149 T(2n,n), array T as in A047140. 0
1, 3, 13, 68, 395, 2383, 14628, 91002, 572629, 3635105, 23230955, 149252778, 963125552, 6238012172, 40529533578, 264038158806, 1724159758595, 11281813669783, 73955009216581, 485575827838870, 3192818972511443 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..20.

CROSSREFS

Sequence in context: A182666 A042659 A054132 * A200757 A000260 A192737

Adjacent sequences:  A047146 A047147 A047148 * A047150 A047151 A047152

KEYWORD

nonn

AUTHOR

Clark Kimberling. Definition revised Dec 08 2006

STATUS

approved

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Last modified May 22 21:04 EDT 2019. Contains 323500 sequences. (Running on oeis4.)