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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.

User: Giovanni Zedda

Giovanni Zedda's wiki page.

Giovanni Zedda has authored 1 sequences.

A306811 Decimal expansion of Pi/(Pi - 1) = 1 + 1/Pi + 1/Pi^2 + ... .

Original entry on oeis.org

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

Author

Giovanni Zedda, Mar 11 2019

Keywords

Comments

Apart from the first digit the same as A201775. - R. J. Mathar, Apr 09 2019

Examples

			1.4669422069242598599833948...
		

Crossrefs

Cf. A000796 (Pi), A185393 (e/(e-1)), A201775.

Programs

  • Mathematica
    RealDigits[Pi/(Pi - 1), 10, 120][[1]] (* Amiram Eldar, Jun 20 2023 *)
  • PARI
    Pi/(Pi-1) \\ Michel Marcus, Mar 12 2019

Formula

Equals Sum_{j>=0} 1/(Pi^j).