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.

A133058 a(0) = a(1) = 1; for n > 1, a(n) = a(n-1) + n + 1 if a(n-1) and n are coprime, otherwise a(n) = a(n-1)/gcd(a(n-1),n).

Table of values

n a(n)
0 1
1 1
2 4
3 8
4 2
5 8
6 4
7 12
8 3
9 1
10 12
11 24
12 2
13 16
14 8
15 24
16 3
17 21
18 7
19 27
20 48
21 16
22 8
23 32
24 4
25 30
26 15
27 5
28 34
29 64
30 32
31 64
32 2
33 36
34 18
35 54
36 3
37 41
38 80
39 120
40 3
41 45
42 15
43 59
44 104
45 150
46 75
47 123
48 41
49 91
50 142
51 194
52 97
53 151
54 206
55 262
56 131
57 189
58 248
59 308
60 77
61 139
62 202
63 266
64 133
65 199
66 266
67 334
68 167

List of values

[1, 1, 4, 8, 2, 8, 4, 12, 3, 1, 12, 24, 2, 16, 8, 24, 3, 21, 7, 27, 48, 16, 8, 32, 4, 30, 15, 5, 34, 64, 32, 64, 2, 36, 18, 54, 3, 41, 80, 120, 3, 45, 15, 59, 104, 150, 75, 123, 41, 91, 142, 194, 97, 151, 206, 262, 131, 189, 248, 308, 77, 139, 202, 266, 133, 199, 266, 334, 167]

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

Content is available under The OEIS End-User License Agreement.