cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

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A370325 Decimal expansion of exp(1)/(1+exp(1)).

Original entry on oeis.org

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

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Author

R. J. Mathar, Feb 15 2024

Keywords

Examples

			0.73105857863000487925115924182183627...
		

Crossrefs

Cf. A076538 (Beatty seq.), A001113, A201776, A068985.

Programs

  • Maple
    exp(1)/(1+exp(1)) ; evalf(%) ;
  • Mathematica
    RealDigits[E/(E + 1), 10, 120][[1]] (* Amiram Eldar, Feb 18 2024 *)
  • PARI
    exp(1)/(exp(1)+1) \\ Amiram Eldar, Feb 18 2024

Formula

Equals A001113*A201776 = 1/(1 + A068985).
Equals 1/(1 + Sum_{k>=0} (-1)^k/k!). - Peter Luschny, Feb 15 2024
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