This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A276763 Decimal expansion of the imaginary part of a fixed point of the logarithmic integral li(z) in C. 2
 2, 0, 6, 5, 9, 2, 2, 2, 0, 2, 3, 7, 0, 6, 6, 2, 1, 8, 8, 9, 8, 8, 1, 0, 4, 6, 1, 1, 2, 5, 4, 1, 0, 8, 4, 3, 0, 0, 1, 4, 2, 4, 9, 8, 5, 3, 1, 9, 0, 0, 6, 7, 3, 2, 8, 3, 8, 5, 7, 9, 1, 1, 8, 0, 4, 5, 9, 8, 8, 5, 9, 4, 9, 3, 2, 6, 0, 6, 7, 7, 7, 7, 8, 3, 5, 5, 5, 4, 5, 7, 0, 2, 8, 2, 7, 1, 5, 9, 2, 8, 4, 6, 7, 8, 6 (list; constant; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS See A276762 for the real part, as well as detailed comments and links. LINKS Stanislav Sykora, Table of n, a(n) for n = 1..2000 EXAMPLE 2.06592220237066218898810461125410843001424985319006732838579118... MATHEMATICA RealDigits[Im[z/.FindRoot[LogIntegral[z] == z, {z, 2+I}, WorkingPrecision -> 100]]][[1]] (* Vaclav Kotesovec, Oct 30 2016 *) PROG (PARI) \\ z may be t_INT, t_REAL, or t_COMPLEX except 0 or 1 li(z)= {   my(sgn=(-1)^if(real(z)<1, imag(z)<0, imag(z)<=0));   sgn*Pi*I - eint1(-log(z)); } default(realprecision, 2100); \\ Execution: Eps_= 4.0*10.0^(-default(realprecision)); z=1+I; zlast=0; \\ Initialize and iterate for(k=1, 1e6, z=li(z); if(abs(z-zlast)

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 October 19 16:17 EDT 2019. Contains 328223 sequences. (Running on oeis4.)