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.

A020939 Greatest k such that (k-th prime) < (9 times n-th prime).

Table of values

n a(n)
1 7
2 9
3 14
4 18
5 25
6 30
7 36
8 39
9 46
10 55
11 59
12 67
13 73
14 76
15 82
16 91
17 99
18 101
19 110
20 115
21 119
22 127
23 132
24 139
25 150
26 155
27 157
28 162
29 165
30 170
31 189
32 193
33 202
34 204
35 217
36 217
37 223
38 232
39 239
40 245
41 254
42 258
43 267
44 270
45 274
46 278
47 290
48 304
49 309
50 310
51 316
52 324
53 326
54 335
55 344
56 350

List of values

[7, 9, 14, 18, 25, 30, 36, 39, 46, 55, 59, 67, 73, 76, 82, 91, 99, 101, 110, 115, 119, 127, 132, 139, 150, 155, 157, 162, 165, 170, 189, 193, 202, 204, 217, 217, 223, 232, 239, 245, 254, 258, 267, 270, 274, 278, 290, 304, 309, 310, 316, 324, 326, 335, 344, 350]