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.

A187398 Numbers divisible by at least three of their digits, all different and >1.

Original entry on oeis.org

248, 264, 324, 384, 396, 432, 624, 648, 672, 728, 735, 784, 824, 864, 936, 1236, 1248, 1296, 1326, 1362, 1368, 1395, 1632, 1692, 1764, 1824, 1926, 1935, 1962, 2048, 2064, 2136, 2184, 2196, 2248, 2304, 2316, 2328, 2340, 2346, 2364, 2376, 2384, 2394, 2408, 2436, 2448, 2460, 2480, 2488, 2496, 2540, 2568, 2584, 2604, 2634, 2640, 2648, 2664, 2688, 2730, 2736, 2744, 2784, 2824, 2832, 2840, 2848, 2856, 2864, 2916, 2934, 2964, 2984, 3024, 3048, 3096, 3126, 3162, 3168
Offset: 1

Views

Author

Zak Seidov, Mar 10 2011

Keywords

Comments

Asymptotic density 19/63 = 0.301.... - Charles R Greathouse IV, Mar 11 2011

Crossrefs

Subsequence of A187516 (numbers divisible by at least two of their digits, different and >1).

Programs

  • Mathematica
    numdig = 3; Select[Range[3168], Length[(u = Union[Select[IntegerDigits[#], #1 > 1 &]])] >= numdig && Plus @@ (Boole@Divisible[#, u]) >= numdig &] (* Amiram Eldar, Aug 30 2020 *)