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.

A263497 Decimal expansion of the Gaussian Hypergeometric Function 2F1(2,2; 5/2; x) at x=1/4.

Original entry on oeis.org

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

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Author

R. J. Mathar, Oct 19 2015

Keywords

Comments

Division through 6 gives 0.2630001.. = integral_{x=0..infinity} x^2*I_1(x)*K_0(x)^2 dx, where I and K are Modified Bessel Functions.

Examples

			1.581600847687...
		

Programs

  • Mathematica
    RealDigits[Hypergeometric2F1[2, 2, 5/2, 1/4], 10, 120][[1]] (* Vaclav Kotesovec, Apr 10 2016 *)