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.

A339912 Numbers k > 1 for which bigomega(k) < bigomega(k-1)/2, where bigomega gives the number of prime factors, counted with multiplicity.

Table of values

n a(n)
1 13
2 17
3 19
4 29
5 31
6 33
7 37
8 41
9 43
10 49
11 53
12 61
13 65
14 67
15 71
16 73
17 79
18 89
19 97
20 101
21 103
22 109
23 113
24 121
25 127
26 129
27 131
28 137
29 139
30 145
31 149
32 151
33 157
34 161
35 163
36 169
37 173
38 177
39 181
40 191
41 193
42 197
43 199
44 201
45 209
46 211
47 217
48 223
49 229
50 233
51 239
52 241
53 251
54 253
55 257
56 265
57 269
58 271
59 277
60 281
61 283
62 289
63 293
64 301
65 305
66 307
67 311
68 313

List of values

[13, 17, 19, 29, 31, 33, 37, 41, 43, 49, 53, 61, 65, 67, 71, 73, 79, 89, 97, 101, 103, 109, 113, 121, 127, 129, 131, 137, 139, 145, 149, 151, 157, 161, 163, 169, 173, 177, 181, 191, 193, 197, 199, 201, 209, 211, 217, 223, 229, 233, 239, 241, 251, 253, 257, 265, 269, 271, 277, 281, 283, 289, 293, 301, 305, 307, 311, 313]