A101512 Decimal expansion of the sine integral at 2*Pi.

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

Offset

1,2

Comments

Si(Infinity)=Pi/2=~1.57079... (A019669).

Links

Table of n, a(n) for n=1..105.

Formula

Equals Integral_{x=0..2*Pi} sin(x)/x dx.

Example

1.41815157613262845024578016229974942914245334929501627184272022969...

Mathematica

RealDigits[ SinIntegral[2Pi], 10, 111] [[1]]

Crossrefs

Cf. A019669, A036792, A099281.

Sequence in context: A089146 A297402 A239666 * A085994 A179836 A334451

Adjacent sequences: A101509 A101510 A101511 * A101513 A101514 A101515

Keyword

cons,nonn

Author

Robert G. Wilson v, Jan 25 2005

Status

approved