OFFSET
1,2
EXAMPLE
24 has the prime-factorization of 2^3 * 3^1. The smallest integer > a(23)=26 that is coprime to 3 and 1 is 28. (27 is not coprime to 3.) So a(24)=28.
CROSSREFS
KEYWORD
nonn
AUTHOR
Leroy Quet, Mar 13 2008
EXTENSIONS
More terms from Sean A. Irvine, Mar 07 2010
STATUS
approved