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.

A029509 Numbers n such that n divides the (right) concatenation of all numbers <= n written in base 16 (most significant digit on right).

Table of values

n a(n)
1 1
2 2
3 3
4 4
5 5
6 6
7 8
8 9
9 10
10 12
11 15
12 25
13 45
14 163
15 234
16 661
17 1034
18 1191
19 1415
20 1835
21 2094
22 3143
23 3284
24 3459
25 3638
26 3915
27 5215
28 16620
29 18505
30 18790
31 31965
32 36600
33 140835
34 175302
35 187170
36 190545
37 283115
38 6926085
39 7607655

List of values

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 25, 45, 163, 234, 661, 1034, 1191, 1415, 1835, 2094, 3143, 3284, 3459, 3638, 3915, 5215, 16620, 18505, 18790, 31965, 36600, 140835, 175302, 187170, 190545, 283115, 6926085, 7607655]