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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A074044 Largest divisor of n having no prime gaps.

Original entry on oeis.org

1, 2, 3, 4, 5, 6, 7, 8, 9, 5, 11, 12, 13, 7, 15, 16, 17, 18, 19, 5, 7, 11, 23, 24, 25, 13, 27, 7, 29, 30, 31, 32, 11, 17, 35, 36, 37, 19, 13, 8, 41, 7, 43, 11, 45, 23, 47, 48, 49, 25, 17, 13, 53, 54, 11, 8, 19, 29, 59, 60, 61, 31, 9, 64, 13, 11, 67, 17, 23, 35, 71, 72
Offset: 1

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Author

Reinhard Zumkeller, Aug 13 2002

Keywords

Crossrefs

Programs

  • Mathematica
    nogapsQ[n_] := Module[{p = FactorInteger[n][[;;, 1]]}, PrimePi[p[[-1]]] == PrimePi[p[[1]]] + Length[p] - 1]; a[n_] := SelectFirst[Reverse[Divisors[n]], nogapsQ]; Array[a, 100] (* Amiram Eldar, Apr 06 2025 *)
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