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.

A029463 Numbers k that divide the (right) concatenation of all numbers <= k written in base 18 (most significant digit on left).

Original entry on oeis.org

1, 2, 3, 6, 9, 17, 18, 27, 34, 36, 44, 51, 54, 68, 81, 99, 102, 108, 153, 162, 204, 289, 306, 324, 340, 360, 408, 442, 459, 486, 536, 540, 578, 612, 648, 680, 702, 729, 867, 908, 918, 972, 1020, 1080, 1156, 1224, 1326, 1377, 1458, 1620, 1683, 1734, 1836
Offset: 1

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  • Mathematica
    b = 18; c = {}; Select[Range[10^5], Divisible[FromDigits[c = Join[c, IntegerDigits[#, b]], b], #] &] (* Robert Price, Mar 11 2020 *)