OFFSET
0,1
COMMENTS
EXAMPLE
The positions 0,1,2,3,4,5,... are N,N,P,P,N,P... (N=nonprime, P=prime),
and are filled by two prime, then two nonprime, one prime, one nonprime member of A001477.
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Juri-Stepan Gerasimov, Jul 28 2009
EXTENSIONS
Definition clarified, offset set to 0, values checked by R. J. Mathar, Aug 02 2009
Missing term 89 contributed by Jaroslav Krizek, Oct 02 2010
STATUS
approved