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A143991 Numerators of numbers with g.f. exp(1-(1-x)^(1/2)). 3
1, 1, 1, 7, 37, 133, 2431, 27007, 176761, 5329837, 12994393, 866792053, 5213746711, 841146804577, 10532583170701, 569600638022431, 16539483668991901, 3333075288160853, 16955228098102446847, 932411737877492011, 10996483739066355827053, 66024590609554132070857 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

LINKS

Table of n, a(n) for n=0..21.

EXAMPLE

1, 1/2, 1/4, 7/48, 37/384, 133/1920, 2431/46080, 27007/645120, 176761/5160960, ...

CROSSREFS

Cf. A143968, A001515.

Sequence in context: A139891 A082113 A196597 * A243893 A012885 A162541

Adjacent sequences:  A143988 A143989 A143990 * A143992 A143993 A143994

KEYWORD

nonn,frac

AUTHOR

N. J. A. Sloane, Dec 02 2008

STATUS

approved

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Last modified July 24 16:49 EDT 2017. Contains 289775 sequences.