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.

A029451 Numbers k that divide the (right) concatenation of all numbers <= k written in base 6 (most significant digit on left).

Original entry on oeis.org

1, 2, 3, 5, 6, 9, 10, 12, 15, 18, 20, 22, 25, 30, 36, 40, 45, 50, 54, 60, 68, 72, 75, 90, 100, 103, 108, 116, 120, 132, 135, 150, 180, 200, 216, 225, 226, 240, 252, 270, 274, 280, 285, 300, 308, 315, 324, 336, 350, 360, 378, 400, 405, 420, 432, 450, 456, 504
Offset: 1

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  • Mathematica
    b = 6; c = {}; Select[Range[10^5], Divisible[FromDigits[c = Join[c, IntegerDigits[#, b]], b], #] &] (* Robert Price, Mar 11 2020 *)