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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A136134 Primes in A136133 (integer log of harmonic numbers sequence).

Original entry on oeis.org

3, 5, 743, 59, 312408461, 13669, 10920223, 85691034670497287, 795398356293665458781, 14301636907, 4280339305565030602944575375011
Offset: 0

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Author

Carlos Alves, Dec 16 2007

Keywords

Crossrefs

Cf. A136133, A136121, A136122, A001008, A002805.

Programs

  • Mathematica
    sopfr = Function[x, Plus @@ Map[Times @@ # &, FactorInteger[x]]]; Select[sopfr /@ HarmonicNumber[Range[100]], PrimeQ]
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Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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