OFFSET
1,2
LINKS
Amiram Eldar, Table of n, a(n) for n = 1..46
PROG
(PARI) a(n) = primepi(4^n) - primepi(3^n); \\ Michel Marcus, Mar 22 2015
CROSSREFS
KEYWORD
nonn
AUTHOR
Amarnath Murthy, Oct 21 2002
EXTENSIONS
More terms from Ralf Stephan, Oct 31 2002
a(14)-a(26) added by David Baugh, Mar 22 2015
STATUS
approved