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.

A232273 Decimal expansion of the arctan of Pi.

Original entry on oeis.org

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

Views

Author

Bruno Berselli, Nov 22 2013

Keywords

Examples

			1.2626272556789116834443220836056983435089476704243835969738099522522...

Crossrefs

Cf. A000796, A019669, A232182, A232272.

Programs

Formula

Equals A019669 - A232272.

A360700 Decimal expansion of arcsec(Pi).

Original entry on oeis.org

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

Views

Author

Wolfe Padawer, Feb 16 2023

Keywords

Examples

			1.246850219862915899250368861010977606425828574215431584950410917894...

Links

Crossrefs

Cf. A232272, A232273, A360701.

Programs

  • Mathematica
    RealDigits[ArcSec[Pi], 10, 105][[1]]

Formula

Equals Pi/2 - arccsc(Pi) = Pi/2 - A360701.
Equals arcsin(sqrt(1 - 1/Pi^2)).
Equals arctan(sqrt(Pi^2 - 1)).
Equals |arcsech(Pi)|.
Equals arccos(1/Pi).

A360701 Decimal expansion of arccsc(Pi).

Original entry on oeis.org

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

Views

Author

Wolfe Padawer, Feb 16 2023

Keywords

Examples

			0.323946106931980719980952830628773835672756125472121325537061378259...

Links

Crossrefs

Cf. A232272, A232273, A360700.

Programs

  • Mathematica
    RealDigits[ArcCsc[Pi], 10, 105][[1]]

Formula

Equals Pi/2 - arcsec(Pi).
Equals arccos(sqrt(1 - 1/Pi^2)).
Equals arctan(1/(sqrt(Pi^2 - 1))).
Showing 1-3 of 3 results.

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

Content is available under The OEIS End-User License Agreement.