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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A178539 Where records occur in A169819.

Original entry on oeis.org

1, 2, 4, 6, 10, 12, 16, 18, 30, 48, 56, 60, 108, 120, 144, 180, 288, 396, 504, 720, 840, 1008, 1176, 1260, 1440, 1680, 1980, 2520, 3360, 3780, 6720, 7560, 9240, 10080, 11088, 11760, 13608, 15120, 15840, 19800, 22680, 25200, 26460, 27720, 31680
Offset: 1

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Author

Zak Seidov, May 29 2010

Keywords

Comments

Next terms corresponding to terms in A178538: 32760,36960,49504,55440,64680,95040,98280,110880,123760,128520, 159840,163800,191520,196560.

Crossrefs

Programs

  • Mathematica
    mx=0;s={};Do[id=IntegerDigits[n];FLA=Flatten[Table[Partition[id,k,1],
    {k,Length[id]}],1];fd=Union[FromDigits/@FLA];
    dv=Length[Union[Flatten[Divisors/@fd]]];If[dv>mx,mx=dv;AppendTo[s2,{mx,n}]],
    {n,200000}]; A178539 = Last/@s
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