OFFSET
1,1
FORMULA
a(1)=4, a(2) = a(3) = 3. For n > 3, if the odd part of n is 1, 9, or a prime, a(n) = 2, otherwise a(n) = 1. - Franklin T. Adams-Watters, May 12 2006
CROSSREFS
KEYWORD
nonn
AUTHOR
Amarnath Murthy, Aug 16 2002
EXTENSIONS
Corrected and extended by Franklin T. Adams-Watters, May 12 2006
STATUS
approved