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.

A328841 Substitute ones for all nonzero digits in primorial base expansion of n, then convert back to decimal.

Table of values

n a(n)
0 0
1 1
2 2
3 3
4 2
5 3
6 6
7 7
8 8
9 9
10 8
11 9
12 6
13 7
14 8
15 9
16 8
17 9
18 6
19 7
20 8
21 9
22 8
23 9
24 6
25 7
26 8
27 9
28 8
29 9
30 30
31 31
32 32
33 33
34 32
35 33
36 36
37 37
38 38
39 39
40 38
41 39
42 36
43 37
44 38
45 39
46 38
47 39
48 36
49 37
50 38
51 39
52 38
53 39
54 36
55 37
56 38
57 39
58 38
59 39
60 30
61 31
62 32
63 33
64 32
65 33
66 36
67 37
68 38
69 39
70 38
71 39
72 36
73 37
74 38
75 39
76 38
77 39
78 36
79 37
80 38
81 39
82 38
83 39
84 36
85 37
86 38
87 39
88 38
89 39
90 30

List of values

[0, 1, 2, 3, 2, 3, 6, 7, 8, 9, 8, 9, 6, 7, 8, 9, 8, 9, 6, 7, 8, 9, 8, 9, 6, 7, 8, 9, 8, 9, 30, 31, 32, 33, 32, 33, 36, 37, 38, 39, 38, 39, 36, 37, 38, 39, 38, 39, 36, 37, 38, 39, 38, 39, 36, 37, 38, 39, 38, 39, 30, 31, 32, 33, 32, 33, 36, 37, 38, 39, 38, 39, 36, 37, 38, 39, 38, 39, 36, 37, 38, 39, 38, 39, 36, 37, 38, 39, 38, 39, 30]