OFFSET
1,5
COMMENTS
If a(n) = 0, then from n onwards, phi will not go below its value at n.
The first odd term in this sequence is a(314) = 315. - Franklin T. Adams-Watters, Oct 25 2006
EXAMPLE
a(2) = 0 since there is no k > 2 for which phi(k) < 1 = phi(2). a(5) = 6 since for k = 6, phi(6) = 2 < 4 = phi(5).
CROSSREFS
KEYWORD
nonn
AUTHOR
Joseph L. Pe, Dec 20 2001
EXTENSIONS
More terms from Franklin T. Adams-Watters, Oct 25 2006
STATUS
approved