OFFSET
1,1
COMMENTS
Are there any zero values other than a(11) = 0?
Conjecture: a(223) = 0. - Sean A. Irvine, Jun 07 2024
EXAMPLE
a(4) = 14: primes up to 14 are 2, 3, 5, 7, 11, 13 out of which four primes 3, 5, 11 and 13 are coprime to 14.
CROSSREFS
KEYWORD
nonn
AUTHOR
Amarnath Murthy, May 10 2002
EXTENSIONS
Corrected and extended by Larry Reeves (larryr(AT)acm.org), Oct 01 2002
STATUS
approved