A019597 Decimal expansion of 2*Pi*e.

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

Offset: 2

Author

N. J. A. Sloane

Keywords

• nonn
• cons

Comments

Equals imaginary part of (E + Pi*i)^2. - Arkadiusz Wesolowski, Jan 13 2013

Examples

			17.079468...
		

Links

• Ivan Panchenko, Table of n, a(n) for n = 2..1000

Programs

Magma

SetDefaultRealField(RealField(100)); R:=RealField(); 2*Pi(R)*Exp(1); // G. C. Greubel, Aug 24 2018

Maple

evalf(2*Pi*exp(1)) ;

Mathematica

RealDigits[N[2*Pi*E, 105]][[1]] (* Arkadiusz Wesolowski, Jan 13 2013 *)

PARI

2*Pi*exp(1) \\ Charles R Greathouse IV, Jan 13 2013