A175315 Decimal expansion of exp(Pi) - exp(-Pi).

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

Offset

2,1

Links

Table of n, a(n) for n=2..106.

N. Kurokawa, M. Wakayama, A generalization of Lerch’s formula, Czechoslovak Math. J. 54 (2004), 941-947.

Formula

Equals A039661 - A093580.

Equals 2*sinh(Pi).

Example

23.0974787145154967559546686307...

Maple

evalf(exp(Pi)-exp(-Pi)) ;

Mathematica

RealDigits[Exp[Pi]-Exp[-Pi], 10, 120][[1]] (* Harvey P. Dale, Aug 28 2019 *)

Prog

(PARI) exp(Pi) + exp(-Pi) \\ Michel Marcus, Jun 29 2019

Crossrefs

Cf. A039661 (exp(Pi)), A093580 (exp(-Pi)), A175314.

Sequence in context: A074760 A137914 A098989 * A180186 A336083 A256294

Adjacent sequences: A175312 A175313 A175314 * A175316 A175317 A175318

Keyword

cons,nonn

Author

R. J. Mathar, Apr 01 2010

Status

approved