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.

A099803 Continued fraction for Soldner's constant.

Original entry on oeis.org

1, 2, 4, 1, 1, 1, 3, 1, 1, 1, 2, 47, 2, 4, 1, 12, 1, 1, 2, 2, 1, 7, 2, 1, 1, 1, 2, 30, 6, 3, 6, 1, 6, 1, 3, 1, 1, 1, 1, 10, 1, 1, 2, 2, 1, 4, 2, 5, 26, 5, 1, 19, 2, 6, 1, 10, 28, 1, 2, 1, 10, 2, 1, 1, 11, 1, 4, 19, 16, 99, 1, 1, 1, 35, 1, 1, 3, 2, 3, 1, 3, 2, 1, 1, 1, 1, 1, 1, 11, 3, 2, 1, 6, 5, 1
Offset: 0

Views

Author

Eric W. Weisstein, Oct 26 2004

Keywords

Examples

			[1, 2, 4, 1, 1, 1, 3, 1, 1, 1, 2, 47, 2, 4, 1, ...]
		

Crossrefs

Cf. A070769 (decimal expansion), A099804 (records).

Programs

  • Mathematica
    ContinuedFraction[x/.FindRoot[LogIntegral[x]==0,{x,1.4}, WorkingPrecision-> 120]] (* Harvey P. Dale, May 01 2012 *)

Extensions

Offset changed by Andrew Howroyd, Aug 04 2024

A099805 Positions of records for terms in the continued fraction of Soldner's constant (A070769).

Original entry on oeis.org

1, 2, 3, 12, 70, 126, 202, 585, 1592, 2436, 2544, 4814, 9603, 12148, 122447
Offset: 1

Views

Author

Eric W. Weisstein, Oct 26 2004

Keywords

Comments

See A229230 for another version.

Crossrefs

Cf. A229230 (= a(n) - 1), A070769, A099804.

Programs

  • Mathematica
    f = FindRoot[LogIntegral@x, {x, 3/2}, WorkingPrecision -> 2^17][[1, 2]]; cf = ContinuedFraction@f; k = 1; mx = 0; lst = {}; len = Length@ cf; While[k < len, If[ cf[[k]] > mx, mx = cf[[k]]; AppendTo[lst, k]]; k++ ]; lst (* Robert G. Wilson v, Aug 05 2010 *)

Extensions

a(15) from Robert G. Wilson v, Aug 05 2010
Edited by N. J. A. Sloane, Jun 19 2021 (removed mention of a(0) from definition).
Showing 1-2 of 2 results.