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A047039 T(2n,n), array T as in A047030. 0
1, 1, 4, 22, 126, 751, 4595, 28514, 179277, 1136405, 7256229, 46583010, 300438175, 1944986187, 12632217312, 82269089182, 537071072123, 3513452296105, 23026993173298, 151165338147804, 993811676366531, 6542280703133297 (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: A116428 A121187 A011789 * A100525 A199033 A086682

Adjacent sequences:  A047036 A047037 A047038 * A047040 A047041 A047042

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified December 17 21:13 EST 2014. Contains 252040 sequences.