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.

A145203 a(n) = pi(A002407(n)).

Table of values

n a(n)
1 4
2 8
3 12
4 18
5 31
6 58
7 67
8 78
9 101
10 115
11 157
12 260
13 279
14 297
15 337
16 361
17 406
18 449
19 500
20 578
21 604
22 688
23 716
24 808
25 907
26 937
27 1037
28 1146
29 1259
30 1407
31 1447
32 1577
33 1614
34 1926
35 2204
36 2253
37 2511
38 2613
39 2725
40 2772
41 2882
42 2992
43 3576
44 3762
45 4480

List of values

[4, 8, 12, 18, 31, 58, 67, 78, 101, 115, 157, 260, 279, 297, 337, 361, 406, 449, 500, 578, 604, 688, 716, 808, 907, 937, 1037, 1146, 1259, 1407, 1447, 1577, 1614, 1926, 2204, 2253, 2511, 2613, 2725, 2772, 2882, 2992, 3576, 3762, 4480]

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

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