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.

A177834 Opmanis's sequence: a(n) is the smallest integer k such that k or one of its nonzero substrings (regarded as an integer) is divisible by every integer in the range 1 through n.

Table of values

n a(n)
1 1
2 2
3 6
4 12
5 45
6 54
7 56
8 56
9 245
10 504
11 1440
12 1440
13 5044
14 5044
15 10456
16 10569
17 11704
18 11704
19 11704
20 13608
21 13608
22 13608
23 26460
24 26460
25 198007
26 258064
27 264600
28 264600
29 475440
30 475440
31 1754608
32 1754608
33 2258064
34 2258064
35 2646004
36 2646004
37 2992520

List of values

[1, 2, 6, 12, 45, 54, 56, 56, 245, 504, 1440, 1440, 5044, 5044, 10456, 10569, 11704, 11704, 11704, 13608, 13608, 13608, 26460, 26460, 198007, 258064, 264600, 264600, 475440, 475440, 1754608, 1754608, 2258064, 2258064, 2646004, 2646004, 2992520]