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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A335011 Decimal expansion of Product_{k>=1} (1 - 1/2^k)^k.

Original entry on oeis.org

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

Views

Author

Vaclav Kotesovec, May 19 2020

Keywords

Examples

			0.0996797312628799854646653560468473049634446150973175301264091855545606305...
		

Crossrefs

Programs

  • Maple
    evalf(exp(-Sum(2^j / (j * (2^j - 1)^2), j=1..infinity)), 120);
  • PARI
    prodinf(k=1, (1 - 1/2^k)^k)

Formula

Equals exp(-Sum_{j>=1} 2^j / (j * (2^j - 1)^2)).
Showing 1-1 of 1 results.