OFFSET
1,2
COMMENTS
Apart from a(2), a(n) is in {0, 1, 2}. Almost all terms are 0 by the Prime Number Theorem. - Charles R Greathouse IV, May 26 2011
EXAMPLE
CROSSREFS
KEYWORD
nonn
AUTHOR
Juri-Stepan Gerasimov, Apr 27 2010
STATUS
approved