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.

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A379392 Decimal expansion of 3*sqrt(3)/(4*Pi^2).

Original entry on oeis.org

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

Views

Author

Stefano Spezia, Dec 22 2024

Keywords

Examples

			0.13162007846365924284255259402723358616623004162...

References

  • Steven R. Finch, Mathematical Constants, Encyclopedia of Mathematics and its Applications, vol. 94, Cambridge University Press, 2003, Section 8.4.2, p. 494.

Crossrefs

Cf. A002194, A002388, A010482, A212002, A240935.

Programs

  • Mathematica
    RealDigits[3Sqrt[3]/(4Pi^2),10,100][[1]]

Formula

Equals A240935/Pi. - Hugo Pfoertner, Dec 22 2024

A379394 Decimal expansion of the area of the convex hull of a circle of circumference 1 and a line segment of length 1/2 with midpoint at the circle center.

Original entry on oeis.org

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

Views

Author

Stefano Spezia, Dec 22 2024

Keywords

Examples

			0.096329616521878247018436489175381344970316266979748...

References

  • Steven R. Finch, Mathematical Constants, Encyclopedia of Mathematics and its Applications, vol. 94, Cambridge University Press, 2003, Section 8.4.2, p. 495.

Crossrefs

Cf. A000796, A002388, A060294, A212002, A275477.

Programs

  • Mathematica
    RealDigits[(Sqrt[Pi^2-4]+Pi-2ArcCos[2/Pi])/(4Pi^2),10,100][[1]]

Formula

Equals (sqrt(Pi^2-4) + Pi - 2*arccos(2/Pi))/(4*Pi^2).
Previous Showing 11-12 of 12 results.

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

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