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.

A378089 Irregular triangle read by rows in which row n lists the numbers k such that phi(k)/tau(k) = n.

Table of values

n a(n)
1 1
2 3
3 8
4 10
5 18
6 24
7 30
8 5
9 9
10 15
11 28
12 40
13 72
14 84
15 90
16 120
17 7
18 21
19 26
20 56
21 70
22 78
23 108
24 126
25 168
26 210
27 34
28 45
29 52
30 102
31 140
32 156
33 252
34 360
35 420
36 11
37 33
38 88
39 110
40 198
41 264
42 330
43 13
44 35
45 39
46 63
47 76
48 104
49 105
50 130
51 228
52 234
53 280
54 312
55 390
56 504
57 540
58 630
59 840
60 58
61 98
62 174
63 294

List of values

[1, 3, 8, 10, 18, 24, 30, 5, 9, 15, 28, 40, 72, 84, 90, 120, 7, 21, 26, 56, 70, 78, 108, 126, 168, 210, 34, 45, 52, 102, 140, 156, 252, 360, 420, 11, 33, 88, 110, 198, 264, 330, 13, 35, 39, 63, 76, 104, 105, 130, 228, 234, 280, 312, 390, 504, 540, 630, 840, 58, 98, 174, 294]

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

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