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.

A379092 Decimal expansion of sqrt(A224273).

Original entry on oeis.org

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

Views

Author

Stefano Spezia, Dec 15 2024

Keywords

Examples

			1.2087177032733153272448479435148561634349207331...

References

  • Steven R. Finch, Mathematical Constants, Encyclopedia of Mathematics and its Applications, vol. 94, Cambridge University Press, 2003, Section 5.24.1, p. 413.

Links

Crossrefs

Cf. A004117, A019692, A073005, A224273.

Programs

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

Formula

Equals sqrt(3)*Gamma(1/3)^(3/2)/(2*Pi).

A371467 Decimal expansion of Product_{k>=0} (1 - 1/(3*k+2)^2).

Original entry on oeis.org

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

Views

Author

Ilya Gutkovskiy, Mar 31 2024

Keywords

Examples

			0.6844634059797257270110769788663463289556838...

Crossrefs

Cf. A003881, A010503, A086089, A096427, A224268, A224273, A371466.

Programs

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

Formula

Equals (4/3) * Pi^2 / Gamma(1/3)^3.
Equals 1/A224273. - Hugo Pfoertner, Mar 31 2024

A245772 Decimal expansion of the entropy of folding of the triangular lattice.

Original entry on oeis.org

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

Views

Author

Jean-François Alcover, Aug 01 2014

Keywords

Examples

			0.1895600483163599659177242011169696602042850762146366815851796...

References

  • Steven R. Finch, Mathematical Constants, Cambridge University Press, 2003, Section 5.24 Lieb's square ice constant, p. 415.

Links

Crossrefs

Cf. A224273.

Programs

  • Mathematica
    RealDigits[(1/2)*Log[(3*Gamma[1/3]^3)/(4*Pi^2)], 10, 104] // First

Formula

(1/2)*log(A224273).
Showing 1-3 of 3 results.

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