|
| |
|
|
A079488
|
|
Number of prime divisors (counted with multiplicity) of A138613(n).
|
|
2
| |
|
|
1, 1, 2, 4, 7, 14, 23, 36, 72, 106, 172, 314
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,3
|
|
|
COMMENTS
| The old entry with this sequence number was a duplicate of A052553.
|
|
|
FORMULA
| a(n)=A001222(A0138613(n)). - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Sep 21 2008
|
|
|
CROSSREFS
| Cf. A138613, A033766, A001222.
Sequence in context: A176450 A181655 A018567 * A054160 A034426 A000075
Adjacent sequences: A079485 A079486 A079487 * A079489 A079490 A079491
|
|
|
KEYWORD
| nonn,more
|
|
|
AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Sep 20 2008
|
|
|
EXTENSIONS
| a(10) from R. J. Mathar, (mathar(AT)strw.leidenuniv.nl), Sep 21 2008
a(11)-a(12) from Donovan Johnson (donovan.johnson(AT)yahoo.com), Dec 19 2008
|
| |
|
|
