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 1-3 of 3 results.

A019847 Decimal expansion of sine of 38 degrees.

Original entry on oeis.org

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

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Author

N. J. A. Sloane

Keywords

Comments

This sequence is also decimal expansion of cosine of 52 degrees. - Mohammad K. Azarian, Jun 29 2013
An algebraic number of degree 12 and denominator 2. - Charles R Greathouse IV, Nov 05 2017

Examples

			0.6156614...

Links

Programs

Formula

Equals 2*A019828*A019880. - R. J. Mathar, Jan 17 2021

A019866 Decimal expansion of sine of 57 degrees.

Original entry on oeis.org

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

Views

Author

N. J. A. Sloane

Keywords

Comments

An algebraic number of degree 16 and denominator 2. - Charles R Greathouse IV, Nov 05 2017

Links

Programs

Formula

Equals A019847 * A019880 + A019828 * A019861 = A019863 * A019896 + A019812 * A019845. - R. J. Mathar, Jan 27 2021

A019969 Decimal expansion of tangent of 71 degrees.

Original entry on oeis.org

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

Views

Author

N. J. A. Sloane

Keywords

Comments

Also the decimal expansion of cotangent of 19 degrees. - Ivan Panchenko, Sep 01 2014

Examples

			2.904210877675822802579325534527091254031261921846221668363...

Links

Crossrefs

Cf. A019880 (sine of 71 degrees).

Programs

  • Magma
    SetDefaultRealField(RealField(100)); R:= RealField(); Tan(71*Pi(R)/180); // G. C. Greubel, Nov 21 2018
  • Mathematica
    RealDigits[Tan[71 Degree],10,120][[1]] (* Harvey P. Dale, Apr 07 2014 *)
  • PARI
    default(realprecision, 100); tan(71*Pi/180) \\ G. C. Greubel, Nov 21 2018
  • Sage
    numerical_approx(tan(71*pi/180), digits=100) # G. C. Greubel, Nov 21 2018
Showing 1-3 of 3 results.

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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