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

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 56th year, we are closing in on 350,000 sequences, and we’ve crossed 9,700 citations (which often say “discovered thanks to the OEIS”).

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A083786 Composite numbers mod 10. 2
 4, 6, 8, 9, 0, 2, 4, 5, 6, 8, 0, 1, 2, 4, 5, 6, 7, 8, 0, 2, 3, 4, 5, 6, 8, 9, 0, 2, 4, 5, 6, 8, 9, 0, 1, 2, 4, 5, 6, 7, 8, 0, 2, 3, 4, 5, 6, 8, 9, 0, 2, 4, 5, 6, 7, 8, 0, 1, 2, 4, 5, 6, 7, 8, 0, 1, 2, 3, 4, 5, 6, 8, 9, 0, 2, 4, 5, 6, 8, 0, 1, 2, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 8, 9, 0, 2, 3, 4, 5, 6, 8, 0 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS G. C. Greubel, Table of n, a(n) for n = 1..5000 FORMULA a(n) = A002808(n) mod 10. - Ray Chandler, Sep 04 2003 MATHEMATICA Mod[Rest@ Select[Range@140, !PrimeQ@# &], 10] (* Robert G. Wilson v, Mar 17 2006 *) PROG (PARI) lista(nn) = forcomposite(n=2, nn, print1(n % 10, ", ")); \\ Michel Marcus, Oct 30 2017 CROSSREFS Cf. A002808, A007652. Sequence in context: A023991 A183005 A103189 * A199976 A165957 A338028 Adjacent sequences:  A083783 A083784 A083785 * A083787 A083788 A083789 KEYWORD nonn,easy AUTHOR Roger L. Bagula, Aug 21 2003 EXTENSIONS More terms from Ray Chandler, Sep 04 2003 Entries checked by Robert G. Wilson v, Mar 17 2006 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 December 3 15:34 EST 2021. Contains 349463 sequences. (Running on oeis4.)