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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A076555 Greatest prime divisor of n-th prime + 2.

Original entry on oeis.org

2, 5, 7, 3, 13, 5, 19, 7, 5, 31, 11, 13, 43, 5, 7, 11, 61, 7, 23, 73, 5, 3, 17, 13, 11, 103, 7, 109, 37, 23, 43, 19, 139, 47, 151, 17, 53, 11, 13, 7, 181, 61, 193, 13, 199, 67, 71, 5, 229, 11, 47, 241, 3, 23, 37, 53, 271, 13, 31, 283, 19, 59, 103, 313, 7, 29, 37, 113, 349
Offset: 1

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Author

Zak Seidov, Oct 19 2002

Keywords

Comments

Greatest prime divisor of n-th prime + 1 in A023509. Greatest prime divisor of n-th prime + 3 in A023576.

Crossrefs

Programs

  • Mathematica
    FactorInteger[#][[-1,1]]&/@(Prime[Range[70]]+2) (* Harvey P. Dale, Sep 05 2014 *)
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