OFFSET
1,1
LINKS
EXAMPLE
The number of distinct prime factors of 45 is 2.
The number of distinct prime factors of 4905 is 3.
The number of distinct prime factors of 494550 is 5.
MAPLE
A101291 := proc(n) 99*100^n/200-9*10^n/20 ; end: A133304 := proc(n) nops(numtheory[factorset](A101291(n))) ; end: for n from 1 do printf("%d, \n", A133304(n)) ; od: # R. J. Mathar, Jul 08 2009
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Parthasarathy Nambi, Oct 18 2007
EXTENSIONS
28 more terms from R. J. Mathar, Jul 08 2009
STATUS
approved