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.

A163757 The count of primes between the n-th unsafe and the n-th safe prime.

Table of values

n a(n)
1 1
2 1
3 0
4 1
5 6
6 6
7 11
8 15
9 25
10 26
11 32
12 37
13 49
14 51
15 54
16 68
17 67
18 70
19 76
20 79
21 98
22 115
23 118
24 121
25 132
26 136
27 159
28 171
29 176
30 176
31 178
32 185
33 192
34 196
35 210
36 234
37 244
38 258
39 258
40 259
41 264
42 275
43 308
44 308
45 318
46 351
47 357
48 359
49 365
50 367
51 370
52 379
53 382
54 386
55 418
56 438
57 455
58 457
59 462
60 473
61 477

List of values

[1, 1, 0, 1, 6, 6, 11, 15, 25, 26, 32, 37, 49, 51, 54, 68, 67, 70, 76, 79, 98, 115, 118, 121, 132, 136, 159, 171, 176, 176, 178, 185, 192, 196, 210, 234, 244, 258, 258, 259, 264, 275, 308, 308, 318, 351, 357, 359, 365, 367, 370, 379, 382, 386, 418, 438, 455, 457, 462, 473, 477]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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