A093580 Decimal expansion of e^(-Pi).

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

Offset: 0

Author

Mohammad K. Azarian, May 14 2004

Keywords

• cons
• nonn

Comments

Also, decimal expansion of (-1)^i. - Rick L. Shepherd, Jul 09 2013

Also, the greatest real value of z that minimizes z^i + z^(-i). - Colin Linzer, Nov 21 2024

Examples

			0.04321391826377224977441773717172801127572810981...
		

Links

• Harry J. Smith, Table of n, a(n) for n = 0..20000
• H. S. Uhler, On the numerical value of i^i, Amer. Math. Monthly, 28 (1921), 114-116.
• Index entries for transcendental numbers.

Crossrefs

Cf. A039661, A001113, A000796, A049006.

Programs

Mathematica

Join[{0}, RealDigits[E^-Pi, 10, 105][[1]]] (* Harvey P. Dale, Apr 25 2012 *)

PARI

{ default(realprecision, 20080); x=10*exp(-Pi); for (n=0, 20000, d=floor(x); x=(x-d)*10; write("b093580.txt", n, " ", d)); } \\ Harry J. Smith, Jun 19 2009

Formula

Equals 1/A039661 = A049006^2. - Hugo Pfoertner, Nov 22 2024