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A047042 T(n,n), array T as in A047040; T(n,n), array T given by A047050. 0
1, 1, 2, 5, 14, 56, 202, 715, 2529, 9701, 36797, 138564, 520062, 1999679, 7700373, 29612097, 113722740, 440354696, 1709283358, 6637835682, 25773923006, 100398993203, 391785231463, 1530125311638, 5978033636691, 23390474605783 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..25.

CROSSREFS

Sequence in context: A122594 A267559 A047136 * A174795 A243551 A110043

Adjacent sequences:  A047039 A047040 A047041 * A047043 A047044 A047045

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified April 20 06:19 EDT 2019. Contains 322294 sequences. (Running on oeis4.)