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!)
A178088 Let Sn=p1+....+pn and zn=Sn/pn. (zn) is not increasing; we have z1<z2<...<z30 then zn<zn-1 for the first time for p31=127, the second time for p35=149 and so on... 0
127, 149, 211, 223, 307, 331, 479, 521, 541, 787, 853, 877, 907, 967, 1087, 1151, 1277, 1361, 1399, 1597, 1657, 1693, 1777, 1847, 1931, 1949, 1973, 2129, 2179, 2203, 2237, 2267, 2333, 2503, 2521, 2579, 2609, 2819, 2879, 2999 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
PROG
(PARI) lista(nn) = {z = 1; for (n=1, nn, nz = sum(i=1, n, prime(i))/prime(n); if (nz < z, print1(prime(n), ", ")); z = nz; ); } \\ Michel Marcus, Jul 19 2013
CROSSREFS
Sequence in context: A126096 A334095 A164966 * A006285 A094933 A156702
KEYWORD
nonn
AUTHOR
Alain Marot (marot.alain(AT)orange.fr), May 19 2010
EXTENSIONS
20th term is 1597 instead of 1587 by Marot Alain (marot.alain(AT)orange.fr), Jun 05 2010
More terms from Michel Marcus, Jul 19 2013
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 March 28 18:04 EDT 2024. Contains 371254 sequences. (Running on oeis4.)