This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A144494 a(n) = 0 if n is prime, otherwise A001222(n). 8
 0, 0, 0, 2, 0, 2, 0, 3, 2, 2, 0, 3, 0, 2, 2, 4, 0, 3, 0, 3, 2, 2, 0, 4, 2, 2, 3, 3, 0, 3, 0, 5, 2, 2, 2, 4, 0, 2, 2, 4, 0, 3, 0, 3, 3, 2, 0, 5, 2, 3, 2, 3, 0, 4, 2, 4, 2, 2, 0, 4, 0, 2, 3, 6, 2, 3, 0, 3, 2, 3, 0, 5, 0, 2, 3, 3, 2, 3, 0, 5, 4, 2, 0, 4, 2, 2, 2, 4, 0, 4, 2, 3, 2, 2, 2, 6, 0, 3, 3, 4, 0, 3, 0, 4, 3 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,4 LINKS G. C. Greubel, Table of n, a(n) for n = 1..5000 MAPLE with(numtheory); f:=n->if isprime(n) then 0 else bigomega(n); fi; MATHEMATICA Table[If[PrimeQ[n], 0, PrimeOmega[n]], {n, 1, 100}] (* G. C. Greubel, Apr 25 2017 *) CROSSREFS Cf. A001221, A001222, A087624, A055636. Sequence in context: A153585 A169611 A242460 * A136166 A259525 A319071 Adjacent sequences:  A144491 A144492 A144493 * A144495 A144496 A144497 KEYWORD nonn AUTHOR N. J. A. Sloane, Dec 12 2008 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified July 21 02:02 EDT 2019. Contains 325189 sequences. (Running on oeis4.)