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.

A187551 Numbers divisible by at least seven of their digits, different and >1.

Original entry on oeis.org

23469768, 23579640, 23594760, 23674896, 23684976, 23687496, 23745960, 23746968, 23769648, 23796864, 23876496, 23897664, 23947560, 23957640, 23976540, 24367896, 24375960, 24376968, 24539760, 24679368, 24687936, 24753960, 24783696, 24869376, 24876936, 25497360, 25639740, 25749360, 25793460, 25967340
Offset: 1

Views

Author

Zak Seidov, Mar 11 2011

Keywords

Comments

There are 708 terms < 10^8.
Asymptotic density 1/180 = 0.00555.... - Charles R Greathouse IV, Mar 11 2011

Crossrefs

Subsequence of A187534.

Programs

  • Mathematica
    numdig = 7; Select[Range[25967340], Length[(u = Union[Select[IntegerDigits[#], #1 > 1 &]])] >= numdig && Plus @@ (Boole@Divisible[#, u]) >= numdig &] (* Amiram Eldar, Aug 30 2020 *)