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.

A348209 a(n) is the smallest positive integer k such that the base-n representation of 2^k has a pandigital ending of length n, or 0 if no such k exists.

Table of values

n a(n)
2 1
3 5
4 0
5 34
6 33
7 20
8 0
9 1689
10 7386
11 1971
12 34180
13 43983
14 262717
15 37576
16 0
17 617963
18 2818633
19 2136492
20 5325278
21 140997161
22 572340185
23 1140209730
24 800810806
25 5573697257
26 6694155083
27 15533636306
28 220798644390

List of values

[1, 5, 0, 34, 33, 20, 0, 1689, 7386, 1971, 34180, 43983, 262717, 37576, 0, 617963, 2818633, 2136492, 5325278, 140997161, 572340185, 1140209730, 800810806, 5573697257, 6694155083, 15533636306, 220798644390]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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