A371667 Decimal expansion of -Ei(-1) / log(2).

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

Offset

0,1

Links

Table of n, a(n) for n=0..102.

Formula

Equals Integral_{x=0..oo} exp(-2^x) dx.

Example

0.316504114203126786893754620753862815669085943...

Mathematica

RealDigits[-ExpIntegralEi[-1]/Log[2], 10, 103][[1]]

Prog

(PARI) eint1(1)/log(2) \\ Michel Marcus, Apr 11 2024

Crossrefs

Cf. A007525, A019704, A099285, A232734.

Sequence in context: A206434 A340179 A120394 * A016575 A308948 A225246

Adjacent sequences: A371664 A371665 A371666 * A371668 A371669 A371670

Keyword

nonn,cons

Author

Ilya Gutkovskiy, Apr 10 2024

Status

approved