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 1-4 of 4 results.

A346571 Decimal expansion of 2 - 305 * Pi^5 / 93312.

Original entry on oeis.org

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

Views

Author

Sean A. Irvine, Jul 23 2021

Keywords

Examples

			0.99974275699255354889900441997548161...

References

  • L. B. W. Jolley, Summation of Series, Dover, 1961, Eq. (316).

Links

Crossrefs

Cf. A092731, A346573, A346572, A346570.

Programs

Formula

Equals 2 + 5 * 61 * Pi^5 / (2^7 * 3^6).
Equals 1 + Sum_{k>=1} ( ((-1)^k/(6*k-1)^5 - (-1)^k/(6*k+1)^5) ).

A346570 Decimal expansion of 2 - 33367 * Pi^7 / 100776960.

Original entry on oeis.org

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

Views

Author

Sean A. Irvine, Jul 23 2021

Keywords

Examples

			0.9999884484387282478381315723917964998588...

References

  • L. B. W. Jolley, Summation of Series, Dover, 1961, Eq. (316).

Links

Crossrefs

Cf. A346573, A346572, A346571, A346449, A346450.

Programs

  • Mathematica
    RealDigits[2 - 33367 * Pi^7 / 100776960, 10, 120][[1]] (* Amiram Eldar, Jun 20 2023 *)

Formula

Equals 2 - 61 * 547 * Pi^7 / (2^10 * 3^9 * 5).
Equals 1 + Sum_{k>=1} ( ((-1)^k/(6*k-1)^7 - (-1)^k/(6*k+1)^7) ).

A346585 Decimal expansion of Pi^3 / (18 * sqrt(3)).

Original entry on oeis.org

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

Views

Author

Sean A. Irvine, Jul 24 2021

Keywords

Examples

			0.99452678821883983883594015647988828371...

References

  • L. B. W. Jolley, Summation of Series, Dover, 1961, Eq. (314).

Links

Crossrefs

Cf. A093766, A346584, A346583, A346572.

Programs

  • Mathematica
    First[RealDigits[N[Pi^3 / (2! * 3^2 * Sqrt[3]),88]]] (* Stefano Spezia, Jul 24 2021 *)

Formula

Equals Pi^3 / (2! * 3^2 * sqrt(3)).
Equals 1 + Sum_{k>=1} ( 1/(6*k+1)^3 - 1/(6*k-1)^3 ).

A346573 Decimal expansion of 2 - Pi/3.

Original entry on oeis.org

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

Views

Author

Sean A. Irvine, Jul 23 2021

Keywords

Examples

			0.9528024488034022538457855389...

References

  • L. B. W. Jolley, Summation of Series, Dover, 1961, Eq. (316).

Links

Crossrefs

Cf. A019670, A346572, A346571, A346570.

Programs

  • Mathematica
    RealDigits[2-Pi/3, 10, 120][[1]] (* Amiram Eldar, Jun 13 2023 *)

Formula

Equals 2 - A019670.
Equals 1 + Sum_{k>=1} ( ((-1)^k/(6*k-1) - (-1)^k/(6*k+1)) ).
Showing 1-4 of 4 results.

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