login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
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
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); };
isA328634(n) = (4==A328578(n));
CROSSREFS
Row 4 of A328631.
Sequence in context: A151821 A147639 A049934 * A089890 A338313 A049932
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 | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified July 18 21:02 EDT 2024. Contains 374388 sequences. (Running on oeis4.)