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.

Showing 1-2 of 2 results.

A190574 Continued fraction expansion of exp(Pi*sqrt(163)/3).

Original entry on oeis.org

640320, 1653264929, 30, 1, 321, 2, 1, 1, 1, 4, 3, 4, 2, 1, 1, 31, 2, 1, 3, 1, 1, 10, 1, 1, 3, 2, 1, 2, 30, 1, 1, 1, 1, 2, 1, 3, 9, 3, 1, 1, 1, 1, 1, 1, 7, 3, 2, 1, 6, 1, 16, 1, 12, 2, 1, 25, 2, 2, 5, 1, 1, 1, 2, 1, 3, 6, 35, 2, 1, 2, 1, 3, 9, 1, 22, 2, 1, 2, 6, 1, 3, 6, 1, 2, 1, 1, 49, 1, 1, 8, 1, 2, 1, 6, 2, 2
Offset: 0

Views

Author

N. J. A. Sloane, May 12 2011

Keywords

References

  • J. M. Borwein, D. H. Bailey, and R. Girgensohn, Experimentation in Mathematics, A K Peters, Ltd., Natick, MA, 2004. x+357 pp. See p. 128.

Crossrefs

Cf. A190575.

Programs

  • Mathematica
    ContinuedFraction[Exp[(Pi Sqrt[163])/3],100] (* Harvey P. Dale, Mar 30 2020 *)

Extensions

Offset changed by Andrew Howroyd, Jul 03 2024

A372719 Decimal expansion of Sum_{k >= 1} floor(k*e^(Pi*sqrt(163/9)))/2^k.

Original entry on oeis.org

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

Views

Author

Paolo Xausa, May 11 2024

Keywords

Examples

			1280639.9999999999999999999999999999999999999999999999999999...
		

Crossrefs

Programs

  • Mathematica
    First[RealDigits[Sum[Floor[k*E^(Pi*Sqrt[163/9])]/2^k, {k, 400}], 10, 100]]

Formula

Approximately 1280640, correct to at least half a billion digits: see Sum 10 in Borwein and Borwein (1992), p. 623.
Showing 1-2 of 2 results.