OFFSET
1,4
LINKS
Eduard Roure Perdices, Table of n, a(n) for n = 1..29 (terms n = 1..24 from Arkadiusz Wesolowski; terms n = 25,26 from David Baugh).
Wikipedia, Prime number theorem
CROSSREFS
KEYWORD
sign
AUTHOR
Arkadiusz Wesolowski, Aug 31 2013
EXTENSIONS
a(25)-a(26) added by David Baugh, Mar 17 2015
STATUS
approved