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

Thanks to everyone who made a donation during our annual appeal!
To see the list of donors, or make a donation, see the OEIS Foundation home page.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A328634 Numbers n for which A328578(n) = A257993(A276086(A276086(n))) = 4. 3
 4, 8, 16, 32, 64, 152, 184, 210, 242, 274, 362, 394, 440, 448, 452, 484, 572, 604, 634, 638, 646, 662, 694, 782, 814, 872, 904, 992, 1024, 1070, 1078, 1082, 1114, 1202, 1234, 1264, 1268, 1276, 1292, 1324, 1412, 1444, 1470, 1502, 1534, 1622, 1654, 1700, 1708, 1712, 1744, 1832, 1864, 1894, 1898, 1906, 1922, 1954, 2042 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Numbers n for which A276087(n) is a multiple of 30, but not of 7. LINKS Antti Karttunen, Table of n, a(n) for n = 1..10000 PROG (PARI) A257993(n) = { for(i=1, oo, if(n%prime(i), return(i))); } A276086(n) = { my(m=1, p=2); while(n, m *= (p^(n%p)); n = n\p; p = nextprime(1+p)); (m); }; A328578(n) = A257993(A276086(A276086(n))); isA328634(n) = (4==A328578(n)); CROSSREFS Row 4 of A328631. Cf. A257993, A276086, A328578. Sequence in context: A151821 A147639 A049934 * A089890 A049932 A272712 Adjacent sequences:  A328631 A328632 A328633 * A328635 A328636 A328637 KEYWORD nonn AUTHOR Antti Karttunen, Oct 27 2019 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 January 20 10:58 EST 2020. Contains 331081 sequences. (Running on oeis4.)