OFFSET
1,1
COMMENTS
LINKS
Diana Mecum, Table of n, a(n) for n = 1..1000
EXAMPLE
a(1)=2 because between 1 and 2 there is the same number of composites (none) as below 1. - R. J. Mathar, Sep 08 2008
For n = 12, there are 5 composites less than 12 (4,6,8,9,10), the next 5 composites are 14,15,16,18,20, so a(12) = 21.
CROSSREFS
KEYWORD
nonn
AUTHOR
Amarnath Murthy, Oct 31 2002
EXTENSIONS
More terms from Franklin T. Adams-Watters, Oct 11 2006
Edited by N. J. A. Sloane, Sep 18 2008 at the suggestion of R. J. Mathar.
STATUS
approved