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A024426 a(n) = [ (1/n)*(S(n,1) + S(n,2) + ... + S(n,n)) ], where S(i,j) are Stirling numbers of second kind. 0
1, 1, 1, 3, 10, 31, 122, 480, 2294, 10929, 60498, 335876, 2095623, 13210136, 91247019, 640907585, 4840330498, 37349712867, 305585514757, 2562264748985, 22547698549102, 203661390447730 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Table of n, a(n) for n=1..22.

CROSSREFS

Sequence in context: A302287 A079522 A325579 * A034016 A001403 A072136

Adjacent sequences:  A024423 A024424 A024425 * A024427 A024428 A024429

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified June 17 19:10 EDT 2019. Contains 324198 sequences. (Running on oeis4.)