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A047149
T(2n,n), array T as in A047140.
1
1, 3, 13, 68, 395, 2383, 14628, 91002, 572629, 3635105, 23230955, 149252778, 963125552, 6238012172, 40529533578, 264038158806, 1724159758595, 11281813669783, 73955009216581, 485575827838870, 3192818972511443
OFFSET
0,2
CROSSREFS
Sequence in context: A182666 A042659 A054132 * A200757 A000260 A192737
KEYWORD
nonn
AUTHOR
Clark Kimberling. Definition revised Dec 08 2006
STATUS
approved