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.

A346449 Decimal expansion of 257543 * Pi^8 / (1410877440 * sqrt(3)).

Original entry on oeis.org

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

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Author

Sean A. Irvine, Jul 18 2021

Keywords

Comments

Note Shamos has a typo, 25743 instead of 257543.

Examples

			0.9999972722389309471467818749637839272444862497...
		

References

  • L. B. W. Jolley, Summation of Series, Dover, 1961, Eq. (329).

Crossrefs

Programs

  • Mathematica
    First[RealDigits[N[11*13*1801*Pi^8/(2^11*3^9*5*7*Sqrt[3]),100]]] (* Stefano Spezia, Jul 19 2021 *)

Formula

Equals 11 * 13 * 1801 * Pi^8 / (2^11 * 3^9 * 5 * 7 * sqrt(3)).
Equals 1 + Sum_{k>=1} ( (-1)^k/(6*k-1)^8 + (-1)^k/(6*k+1)^8 ).