OFFSET
0,1
FORMULA
a(n) = number of m such that A048865(m) = n.
EXAMPLE
a(4) = 3. The three values of m for which sphi(m) = 4 are 11, 14 and 15. The coprime primes less than 11 are 2, 3, 5 and 7. The coprime primes less than 14 are 3, 5, 11 and 13. The coprime primes less than 15 are 2, 7, 11 and 13.
MATHEMATICA
(continuing from A048865) Table[Count[t, i], {i, 0, 150}]
CROSSREFS
KEYWORD
nonn
AUTHOR
Amarnath Murthy, May 10 2002
EXTENSIONS
More terms from Hans Havermann, Jun 04, 2002
STATUS
approved