OFFSET
1,2
COMMENTS
LINKS
V. Shevelev, Ramanujan and Labos primes, their generalizations, and classifications of primes, J. Integer Seq. 15 (2012) Article 12.5.4
FORMULA
If p_n is not a Ramanujan prime, then a(n) = A104272(n-pi(p_n/2)).
EXAMPLE
CROSSREFS
KEYWORD
nonn
AUTHOR
Vladimir Shevelev and Peter J. C. Moses, May 20 2012
STATUS
approved