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.

A328406 The length of primorial base expansion (number of significant digits) of A276086(A276086(A276086(n))), where A276086(n) converts primorial base expansion of n into its prime product form.

Table of values

n a(n)
0 2
1 3
2 2
3 3
4 3
5 7
6 4
7 5
8 6
9 3
10 7
11 8
12 12
13 8
14 7
15 12
16 12
17 7
18 17
19 11
20 25
21 21
22 24
23 84
24 49
25 63
26 94
27 67
28 49
29 97
30 4
31 6
32 8
33 9
34 7
35 10
36 6
37 14
38 13
39 4
40 14
41 11
42 22
43 22
44 19
45 20
46 66
47 16
48 23
49 40
50 20
51 19
52 50
53 105
54 81
55 87
56 104
57 71
58 49
59 81
60 12
61 10
62 34
63 21
64 9
65 16
66 11
67 23
68 16
69 17
70 85
71 49
72 71
73 27
74 44
75 21
76 93
77 87
78 39
79 58
80 171
81 50
82 205
83 112
84 54
85 78
86 78

List of values

[2, 3, 2, 3, 3, 7, 4, 5, 6, 3, 7, 8, 12, 8, 7, 12, 12, 7, 17, 11, 25, 21, 24, 84, 49, 63, 94, 67, 49, 97, 4, 6, 8, 9, 7, 10, 6, 14, 13, 4, 14, 11, 22, 22, 19, 20, 66, 16, 23, 40, 20, 19, 50, 105, 81, 87, 104, 71, 49, 81, 12, 10, 34, 21, 9, 16, 11, 23, 16, 17, 85, 49, 71, 27, 44, 21, 93, 87, 39, 58, 171, 50, 205, 112, 54, 78, 78]