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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.

A348836 a(n) is the number of primes <= prime(n)^2/2.

Table of values

n a(n)
1 1
2 2
3 5
4 9
5 17
6 23
7 34
8 41
9 56
10 81
11 92
12 124
13 146
14 157
15 185
16 222
17 270
18 283
19 334
20 368
21 386
22 444
23 481
24 548
25 635
26 681
27 703
28 753
29 780
30 832
31 1013
32 1068
33 1160
34 1192
35 1345
36 1376
37 1472
38 1577
39 1648
40 1752
41 1864
42 1899
43 2090
44 2129
45 2197
46 2240
47 2492
48 2749
49 2837
50 2881
51 2976
52 3107
53 3159
54 3389
55 3540

List of values

[1, 2, 5, 9, 17, 23, 34, 41, 56, 81, 92, 124, 146, 157, 185, 222, 270, 283, 334, 368, 386, 444, 481, 548, 635, 681, 703, 753, 780, 832, 1013, 1068, 1160, 1192, 1345, 1376, 1472, 1577, 1648, 1752, 1864, 1899, 2090, 2129, 2197, 2240, 2492, 2749, 2837, 2881, 2976, 3107, 3159, 3389, 3540]

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

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