The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Please make a donation to keep the OEIS running. We are now in our 56th year. In the past year we added 10000 new sequences and reached almost 9000 citations (which often say "discovered thanks to the OEIS"). Other ways to donate

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A146071 Consider A145834 as the first step of the sieving (subtracting the sum of its prime factors with repetition from the composite numbers). This sequence is the result of the subsequent application of above described sieving - thus all terms of this sequence arise as prime numbers. 2
 0, 1, 2, 3, 3, 5, 5, 7, 2, 3, 11, 11, 3, 7, 7, 11, 3, 17, 11, 3, 19, 7, 23, 11, 17, 23, 29, 11, 29, 7, 11, 37, 23, 17, 31, 23, 43, 23, 43, 23, 3, 37, 29, 17, 23, 47, 17, 47, 43, 43, 37, 23, 29, 53, 59, 37, 67, 43, 23, 43, 17, 41, 23, 71, 59, 71, 47, 59, 7, 71, 83, 23, 23, 41, 67, 17, 59 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS Florentin Smarandache (in a Sunday, Nov 02 2008 email exchange) asks: how many times does each prime (> 3) appear in this sequence? This question can also be asked about A029909. - Alexander R. Povolotsky, Nov 07 2008 LINKS PROG (PARI) A146071(n)=n=A002808(n); while( n>1 & !isprime(n), n=A075255(n)); n \\ M. F. Hasler, Nov 02 2008 CROSSREFS Cf. A145834, A001414, A002808, A075255. Sequence in context: A161172 A093505 A238527 * A167411 A112823 A247176 Adjacent sequences:  A146068 A146069 A146070 * A146072 A146073 A146074 KEYWORD nonn AUTHOR Alexander R. Povolotsky, Oct 26 2008 EXTENSIONS More terms from M. F. Hasler, Nov 02 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 November 24 06:34 EST 2020. Contains 338607 sequences. (Running on oeis4.)