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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A272593 Numbers n such that the multiplicative group modulo n is the direct product of 3 cyclic groups. 10
 24, 40, 48, 56, 60, 72, 80, 84, 88, 96, 104, 105, 112, 132, 136, 140, 144, 152, 156, 160, 165, 176, 180, 184, 192, 195, 200, 204, 208, 210, 216, 220, 224, 228, 231, 232, 248, 252, 255, 260, 272, 273, 276, 285, 288, 296, 300, 304, 308, 315, 320, 328, 330, 340, 344, 345, 348, 352, 357, 364, 368, 372, 376, 380 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Numbers n such that A046072(n) = 3. LINKS PROG (PARI) for(n=1, 10^3, my(t=#(znstar(n)[2])); if(t==3, print1(n, ", "))); CROSSREFS Direct product of k groups: A033948 (k=1), A272593 (k=2), A272594 (k=4), A272595 (k=5), A272596 (k=6), A272597 (k=7), A272598 (k=8), A272599 (k=9). Sequence in context: A095158 A271422 A062374 * A048104 A334801 A297401 Adjacent sequences:  A272590 A272591 A272592 * A272594 A272595 A272596 KEYWORD nonn AUTHOR Joerg Arndt, May 05 2016 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 September 27 00:14 EDT 2020. Contains 337378 sequences. (Running on oeis4.)