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.

A358940 Decimal expansion of the real root of x^5 - x^3 - 1.

Original entry on oeis.org

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

Views

Author

Wolfdieter Lang, Dec 12 2022

Keywords

Comments

The other (complex) roots are 0.340794866197006415... + 0.785423103049449080...*i and -0.959047717892755927... + 0.428365956254189316...*i, and their conjugates.

Examples

			1.23650570339149902433757480097614678268104294354611496776617384170726143...

Crossrefs

Cf. A160155, A230152, A358939, A358941, A358942.

Programs

  • Mathematica
    RealDigits[x /. FindRoot[x^5 - x^3 - 1, {x, 1}, WorkingPrecision -> 120], 10, 120][[1]] (* Amiram Eldar, Dec 15 2022 *)

A358941 Decimal expansion of the real root of x^5 + x^2 - 1.

Original entry on oeis.org

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

Views

Author

Wolfdieter Lang, Dec 15 2022

Keywords

Comments

The other (complex) roots are 0.464912201602897854... + 1.07147384027026940...*i, and -0.869277501842593861 + 0.388269406599740355...*i, and their conjugates.

Crossrefs

Cf. A160155, A230152, A358939, A358940, A358942.

Programs

  • Mathematica
    RealDigits[x /. FindRoot[x^5 + x^2 - 1, {x, 1}, WorkingPrecision -> 120], 10, 120][[1]] (* Amiram Eldar, Dec 15 2022 *)
  • PARI
    solve(x=0, 1, x^5 + x^2 - 1) \\ Michel Marcus, Dec 19 2022

Formula

0.808730600479392013738554526511400064951377351559313075548116401836543340...

A358942 Decimal expansion of the real root of x^5 - x^2 - 1.

Original entry on oeis.org

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

Views

Author

Wolfdieter Lang, Dec 15 2022

Keywords

Comments

The other (complex) roots are 0.154589676718332223... + 0.828074133201299911...*i, and -0.751519232378943729... + 0.784615921039447991...*i, together with their conjugates.

Examples

			1.19385911132122301200902074629803112451452426948644450960208140159603556...

Crossrefs

Cf. A160155, A230152, A358939, A358940, A358941.

Programs

  • Mathematica
    RealDigits[x /. FindRoot[x^5 - x^2 - 1, {x, 1}, WorkingPrecision -> 120], 10, 120][[1]] (* Amiram Eldar, Dec 15 2022 *)
Showing 1-3 of 3 results.

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

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