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A076927 a(n) = A076926(n)/n. 1
2, 3, 10, 105, 462, 5005, 72930, 4849845, 74364290, 646969323, 18232771830, 1236789689135, 23403866425170, 934482952262145, 40992652172566094, 16294579238595022365, 113103550009071331710, 19548063559901161830545 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..18.

FORMULA

a(n) = denominator(n*sum(1/prime(k), k=1..n)). [Gary Detlefs, Dec 06 2011]

MAPLE

seq(lcm(product(ithprime(i), i=1..j), j)/j, j=1..40);

PROG

(PARI) a(n) = denominator(n*sum(k=1, n, 1/prime(k))); \\ Michel Marcus, May 26 2018

CROSSREFS

Cf. A076926.

Sequence in context: A270356 A229220 A155148 * A064647 A119810 A055708

Adjacent sequences:  A076924 A076925 A076926 * A076928 A076929 A076930

KEYWORD

nonn

AUTHOR

Amarnath Murthy, Oct 17 2002

EXTENSIONS

Corrected and extended by Sascha Kurz, Jan 03 2003

STATUS

approved

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Last modified December 5 10:45 EST 2019. Contains 329751 sequences. (Running on oeis4.)