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!)
A084591 Least positive integers, all distinct, that satisfy Sum_{n>0} 1/a(n)^z = 0, where z is the fourth nontrivial zero of the Riemann zeta function: z = (1/2 + i*y) with y=30.4248761258595132103118975... 5

%I #15 Apr 16 2022 22:46:54

%S 1,2,4,6,7,15,20,27,37,50,55,61,67,73,80,108,118,129,141,154,168,184,

%T 202,221,241,262,284,307,331,356,383,413,446,481,518,557,598,641,687,

%U 736,788,843,901,962,1025,1091,1159,1230,1303,1379,1457,1538,1621,1707

%N Least positive integers, all distinct, that satisfy Sum_{n>0} 1/a(n)^z = 0, where z is the fourth nontrivial zero of the Riemann zeta function: z = (1/2 + i*y) with y=30.4248761258595132103118975...

%C Sequence satisfies Sum_{n>0} 1/a(n)^z = 0 by requiring that the modulus of the successive partial sums are monotonically decreasing in magnitude to zero for the given z.

%H Andrew M. Odlyzko, <a href="http://www.plouffe.fr/simon/constants/zeta100.html">The first 100 (nontrivial) zeros of the Riemann Zeta function.</a>

%o (PARI) S=0; w=1; a=0; for(n=1,100,b=a+1; while(abs(S+exp(-z*log(b)))>w,b++); S=S+exp(-z*log(b)); w=abs(S); a=b; print1(b,","))

%Y Cf. A084588, A084589, A084590, A084592, A084593.

%K nonn

%O 1,2

%A _Paul D. Hanna_, Jun 04 2003

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 17 05:50 EDT 2024. Contains 374360 sequences. (Running on oeis4.)