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.

A286941 Irregular triangle read by rows: the n-th row corresponds to the totatives of the n-th primorial, A002110(n).

Table of values

n a(n)
1 1
2 1
3 5
4 1
5 7
6 11
7 13
8 17
9 19
10 23
11 29
12 1
13 11
14 13
15 17
16 19
17 23
18 29
19 31
20 37
21 41
22 43
23 47
24 53
25 59
26 61
27 67
28 71
29 73
30 79
31 83
32 89
33 97
34 101
35 103
36 107
37 109
38 113
39 121
40 127
41 131
42 137
43 139
44 143
45 149
46 151
47 157
48 163
49 167
50 169
51 173
52 179
53 181
54 187
55 191
56 193
57 197
58 199
59 209

List of values

[1, 1, 5, 1, 7, 11, 13, 17, 19, 23, 29, 1, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 121, 127, 131, 137, 139, 143, 149, 151, 157, 163, 167, 169, 173, 179, 181, 187, 191, 193, 197, 199, 209]

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

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