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.

A381087 The smallest positive integer that produces a product that contains the digit 2 when multiplied by 2 a total of n times.

Table of values

n a(n)
0 2
1 1
2 6
3 31
4 64
5 64
6 331
7 331
8 814
9 1607
10 4107
11 5129
12 5129
13 5129
14 10283
15 12819
16 16163
17 16163
18 16163
19 40108
20 40108
21 40108
22 40108
23 40108
24 40108
25 80313
26 80313
27 80313
28 80313
29 100153
30 100153
31 100153
32 100153
33 100153
34 100153
35 100153
36 100153
37 100153
38 100153
39 100153
40 100153
41 100153
42 100153
43 100153
44 100153
45 100153
46 100153
47 100153
48 100153
49 100153
50 100153
51 100153
52 100153

List of values

[2, 1, 6, 31, 64, 64, 331, 331, 814, 1607, 4107, 5129, 5129, 5129, 10283, 12819, 16163, 16163, 16163, 40108, 40108, 40108, 40108, 40108, 40108, 80313, 80313, 80313, 80313, 100153, 100153, 100153, 100153, 100153, 100153, 100153, 100153, 100153, 100153, 100153, 100153, 100153, 100153, 100153, 100153, 100153, 100153, 100153, 100153, 100153, 100153, 100153, 100153]

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

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