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.

A328574 a(1) = 0, and, for n >= 2, numbers n whose primorial base expansion doesn't contain any nonleading zeros.

Table of values

n a(n)
1 0
2 1
3 3
4 5
5 9
6 11
7 15
8 17
9 21
10 23
11 27
12 29
13 39
14 41
15 45
16 47
17 51
18 53
19 57
20 59
21 69
22 71
23 75
24 77
25 81
26 83
27 87
28 89
29 99
30 101
31 105
32 107
33 111
34 113
35 117
36 119
37 129
38 131
39 135
40 137
41 141
42 143
43 147
44 149
45 159
46 161
47 165
48 167
49 171
50 173
51 177
52 179
53 189
54 191
55 195
56 197
57 201
58 203
59 207
60 209
61 249
62 251
63 255
64 257
65 261
66 263
67 267
68 269
69 279
70 281
71 285

List of values

[0, 1, 3, 5, 9, 11, 15, 17, 21, 23, 27, 29, 39, 41, 45, 47, 51, 53, 57, 59, 69, 71, 75, 77, 81, 83, 87, 89, 99, 101, 105, 107, 111, 113, 117, 119, 129, 131, 135, 137, 141, 143, 147, 149, 159, 161, 165, 167, 171, 173, 177, 179, 189, 191, 195, 197, 201, 203, 207, 209, 249, 251, 255, 257, 261, 263, 267, 269, 279, 281, 285]