|
| |
|
|
A095683
|
|
Number of prime power divisors of n. If n=product p_i^r_i then d=product {p_i^s_i, 2<=s_i<=r_i, s_i is prime} is a prime power divisor of n.
|
|
1
| |
|
|
1, 0, 0, 1, 0, 0, 0, 2, 1, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 2, 0, 0, 0, 0, 3, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,8
|
|
|
FORMULA
| Multiplicative with a(p^e) = A000720(e). - Vladeta Jovovic (vladeta(AT)eunet.rs), Jul 06 2004
|
|
|
EXAMPLE
| n=16: prime power divisors of 16 are {2^2, 2^3}, so a(16)=2.
|
|
|
CROSSREFS
| Sequence in context: A124749 A127844 A017877 * A074079 A037858 A037876
Adjacent sequences: A095680 A095681 A095682 * A095684 A095685 A095686
|
|
|
KEYWORD
| nonn,mult
|
|
|
AUTHOR
| Yasutoshi Kohmoto (zbi74583(AT)boat.zero.ad.jp)
|
|
|
EXTENSIONS
| More terms from Vladeta Jovovic (vladeta(AT)eunet.rs), Jul 06 2004
|
| |
|
|
