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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A387131 Decimal expansion of the real part of the complex solutions to log(z) = -1/z on the principal branch of log(z).

Original entry on oeis.org

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

Views

Author

Stefano Spezia, Aug 17 2025

Keywords

Examples

			0.16837637908722291055702904019641979887737474829...
		

Crossrefs

Cf. A387132 (absolute value of the imaginary part).

Programs

  • Mathematica
    RealDigits[Re[-1/ProductLog[-1]],10,100][[1]]

Formula

Equals Re(-1/LambertW(-1)).
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