OFFSET
1,1
COMMENTS
Values of these quotients are expectedly lower than ratios of A051027(n)/n.
EXAMPLE
For n = 7, the seventh prime is 17, so a(7) = floor(sigma(sigma(17))/17) = floor(sigma(18)/17) = floor(39/17) = 2.
PROG
(PARI) a(n) = my(p=prime(n)); sigma(p+1)\p; \\ Michel Marcus, Dec 23 2018
CROSSREFS
KEYWORD
nonn
AUTHOR
Labos Elemer, Oct 25 2004
STATUS
approved