OFFSET
3,1
COMMENTS
Conjecture: a(n) = 4 for all prime numbers >= 3 and 3 for all composites
Third column of triangle in A081532. - N. J. A. Sloane, Oct 12 2010.
LINKS
Antti Karttunen, Table of n, a(n) for n = 3..2000 (computed from the b-file of A005179 provided by Don Reble)
FORMULA
EXAMPLE
a(4) = 3 because the divisors of 6 are 1, 2, 3, 6.
CROSSREFS
KEYWORD
nonn
AUTHOR
J. Lowell, Oct 12 2010
EXTENSIONS
More terms from R. J. Mathar, Oct 13 2010
STATUS
approved