A276761 Decimal expansion of the modulus of the fixed point of -exp(z) in C congruent with the branch K=1 of log(z)+2*Pi*K*i.

4, 6, 3, 6, 2, 8, 4, 6, 3, 2, 7, 8, 6, 6, 2, 5, 1, 8, 9, 5, 4, 4, 9, 5, 2, 3, 1, 8, 0, 3, 4, 2, 0, 5, 3, 8, 7, 0, 4, 4, 6, 9, 9, 3, 5, 5, 6, 7, 7, 5, 7, 5, 2, 5, 2, 9, 6, 3, 9, 3, 5, 1, 0, 1, 9, 3, 0, 2, 5, 4, 4, 9, 3, 1, 0, 4, 5, 0, 9, 4, 5, 2, 4, 9, 4, 6, 6, 2, 2, 6, 1, 9, 3, 7, 3, 2, 8, 7, 8, 3, 9, 2, 7, 5, 4

Offset

1,1

Comments

Modulus of z_2 = A276759+i*A276760. See A276759 for more information.

Links

Stanislav Sykora, Table of n, a(n) for n = 1..2000

Stanislav Sykora, Fixed points of the mappings exp(z) and -exp(z) in C, 2016.

Example

4.636284632786625189544952318034205387044699355677575252963935...

Mathematica

RealDigits[Norm[ProductLog[1, 1]], 10, 105][[1]] (* Jean-François Alcover, Nov 12 2016 *)

Prog

(PARI) default(realprecision, 2050); eps=5.0*10^(default(realprecision))
M(z, K)=log(-z)+2*Pi*K*I; \\ the convergent mapping (any K)
K=1; z=1+I; zlast=z;
while(1, z=M(z, K); if(abs(z-zlast)<eps, break); zlast=z);
abs(z)

Crossrefs

Fixed points of -exp(z): z_0: A030178, and z_2: A276759 (real part), A276760 (imaginary part).

Fixed points of +exp(z): z_1: A059526, A059527, A238274, and z_3: A277681, A277682, A277683.

Sequence in context: A200640 A179453 A273819 * A073000 A377277 A378221

Adjacent sequences: A276758 A276759 A276760 * A276762 A276763 A276764

Keyword

nonn,cons

Author

Stanislav Sykora, Nov 12 2016

Status

approved