This site is supported by donations to The OEIS Foundation.

 Annual appeal: Please make a donation to keep the OEIS running! Over 6000 articles have referenced us, often saying "we discovered this result with the help of the OEIS". Other ways to donate

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A158611 0, 1 and the primes. 29
 0, 1, 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229, 233, 239, 241, 251, 257, 263 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS Essentially a duplicate of A008578. - N. J. A. Sloane, Mar 27 2009 Or, nonnegative noncomposite numbers. - Juri-Stepan Gerasimov, Nov 22 2009, Dec 12 2009 Numbers with all divisors in arithmetic progression. - Charles R Greathouse IV, Oct 19 2015 LINKS FORMULA a(n) = A008578(n-1), n > 1. MATHEMATICA Join[{0, 1}, Table[Prime[n], {n, 400}]] (* Vladimir Joseph Stephan Orlovsky, Feb 04 2012 *) PROG (PARI) a(n)=if(n<3, n-1, prime(n-2)) \\ Charles R Greathouse IV, Aug 26 2011 (MAGMA) [0, 1] cat [NthPrime(n): n in [1..100]]; // Vincenzo Librandi, Dec 08 2015 (GAP) A158611:=Concatenation([0, 1], Filtered([1..10^5], IsPrime)); # Muniru A Asiru, Sep 05 2017 CROSSREFS A158611 U A002808 = A141468 U A000040 = A001477. - Juri-Stepan Gerasimov, Sep 27 2009 Cf. A008578. Sequence in context: A055398 A070159 * A226159 A182986 A000040 A008578 Adjacent sequences:  A158608 A158609 A158610 * A158612 A158613 A158614 KEYWORD nonn,easy AUTHOR Jaroslav Krizek, Mar 22 2009 EXTENSIONS Edited by R. J. Mathar, Aug 21 2009 Further edited by R. J. Mathar, Klaus Brockhaus and N. J. A. Sloane, Sep 13 2009 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 | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.