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.

A100547 Decimal expansion of -cos(2^19*r) where r ~ 0.739085 is the root of cos x = x (A003957).

Original entry on oeis.org

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

Views

Author

Gerald McGarvey, Jan 01 2005

Keywords

Examples

			.999993333703844444728686845788780609012808601649593822014377814666899997...
		

Crossrefs

Cf. A003957.

Programs

  • Mathematica
    r = FindRoot[Cos[x] == x, {x, 1.}, WorkingPrecision -> 1000][[1, 2]];
    RealDigits[Cos[2^19 r]][[1]] (* Ben Branman, Aug 19 2012 *)