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.

A328288 Triangle T(m,n) = # { k | concat(mk,nk) has no digit twice or more }, m >= n >= 0.

Table of values

n a(n)
0 0
1 986409
2 0
3 438404
4 304
5 0
6 572175
7 153
8 157
9 0
10 219202
11 197
12 124
13 97
14 0
15 109601
16 221
17 156
18 69
19 171
20 0
21 255752
22 73
23 88
24 142
25 68
26 69
27 0
28 140515
29 129
30 73
31 81
32 86
33 62
34 46
35 0
36 109601
37 189
38 88
39 40
40 67
41 48
42 51
43 24
44 0
45 432645
46 89
47 80
48 77
49 31
50 63
51 68
52 41
53 20
54 0
55 0
56 0
57 132
58 80
59 90
60 58
61 32
62 63
63 99
64 37
65 0

List of values

[0, 986409, 0, 438404, 304, 0, 572175, 153, 157, 0, 219202, 197, 124, 97, 0, 109601, 221, 156, 69, 171, 0, 255752, 73, 88, 142, 68, 69, 0, 140515, 129, 73, 81, 86, 62, 46, 0, 109601, 189, 88, 40, 67, 48, 51, 24, 0, 432645, 89, 80, 77, 31, 63, 68, 41, 20, 0, 0, 0, 132, 80, 90, 58, 32, 63, 99, 37, 0]