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A067657 Prime values of A001008, the numerators of the Harmonic Numbers. 9
3, 11, 137, 761, 7129, 18858053, 34395742267, 85691034670497533, 252476961434436524654789, 928551009361054917576341971, 42409610330030873613929048033, 4868007055309996043055960217131137 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..12.

FORMULA

A001008 INTERSECT A000040.

MATHEMATICA

Table[ HarmonicNumber[n], {n, 0, 80}] // Numerator // Select[#, PrimeQ]& (* Jean-Fran├žois Alcover, May 27 2013 *)

CROSSREFS

Sequence in context: A112957 A057205 A121897 * A063502 A072639 A201000

Adjacent sequences:  A067654 A067655 A067656 * A067658 A067659 A067660

KEYWORD

nonn

AUTHOR

Benoit Cloitre, Feb 03 2002

STATUS

approved

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Last modified February 23 17:41 EST 2018. Contains 299584 sequences. (Running on oeis4.)