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.

A340380 Numbers whose odd part is a squarefree semiprime (A006881); numbers of the form 2^k * p * q, with k >= 0, and distinct odd primes p and q.

Table of values

n a(n)
1 15
2 21
3 30
4 33
5 35
6 39
7 42
8 51
9 55
10 57
11 60
12 65
13 66
14 69
15 70
16 77
17 78
18 84
19 85
20 87
21 91
22 93
23 95
24 102
25 110
26 111
27 114
28 115
29 119
30 120
31 123
32 129
33 130
34 132
35 133
36 138
37 140
38 141
39 143
40 145
41 154
42 155
43 156
44 159
45 161
46 168
47 170
48 174
49 177
50 182
51 183
52 185
53 186
54 187
55 190
56 201
57 203
58 204
59 205
60 209
61 213
62 215
63 217
64 219
65 220
66 221
67 222
68 228
69 230

List of values

[15, 21, 30, 33, 35, 39, 42, 51, 55, 57, 60, 65, 66, 69, 70, 77, 78, 84, 85, 87, 91, 93, 95, 102, 110, 111, 114, 115, 119, 120, 123, 129, 130, 132, 133, 138, 140, 141, 143, 145, 154, 155, 156, 159, 161, 168, 170, 174, 177, 182, 183, 185, 186, 187, 190, 201, 203, 204, 205, 209, 213, 215, 217, 219, 220, 221, 222, 228, 230]