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!)
 A122383 a(n) = m-th positive integer which is coprime to n, where phi(n) is number of positive integers which are <= n and are coprime to n and m = phi(n) if phi(n)|n, else m = n mod phi(n).. 2
 1, 1, 1, 3, 1, 5, 1, 7, 4, 3, 1, 11, 1, 3, 13, 15, 1, 17, 1, 9, 16, 3, 1, 23, 6, 3, 13, 9, 1, 19, 1, 31, 20, 3, 16, 35, 1, 3, 23, 19, 1, 19, 1, 7, 38, 3, 1, 47, 8, 23, 29, 7, 1, 53, 19, 17, 32, 3, 1, 43, 1, 3, 46, 63, 22, 19, 1, 7, 38, 61, 1, 71, 1, 3, 64, 7, 20, 19, 1, 39, 40, 3, 1, 41, 27, 3 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,4 LINKS MATHEMATICA f[n_] := Block[{k = 0, m = Mod[n, EulerPhi[n], 1]}, While[m > 0, k++; While[GCD[n, k] > 1, k++ ]; m--; ]; k]; Table[f[n], {n, 90}] (* Ray Chandler, Oct 26 2006 *) CROSSREFS Cf. A000010, A122377, A124333. Sequence in context: A339667 A322993 A118402 * A292393 A136180 A095112 Adjacent sequences:  A122380 A122381 A122382 * A122384 A122385 A122386 KEYWORD nonn AUTHOR Leroy Quet, Oct 19 2006 EXTENSIONS Edited and extended by Ray Chandler, Oct 26 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 6 07:17 EST 2021. Contains 349563 sequences. (Running on oeis4.)