OFFSET
0,1
LINKS
Andrew R. Booker, The Nth Prime Page
MATHEMATICA
(* see A037057 for f *) PrimePi[ Table[ f[n, 2], {n, 1, 13}]]
CROSSREFS
KEYWORD
nonn,base,hard
AUTHOR
Patrick De Geest, Jan 04 1999
EXTENSIONS
a(0)=2 prepended by Sean A. Irvine, Dec 06 2020
STATUS
approved