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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.

A373471 Primes indices of nonzero bits in Pi (A256108).

Table of values

n a(n)
1 3
2 11
3 13
4 19
5 23
6 29
7 41
8 43
9 47
10 53
11 71
12 103
13 107
14 131
15 149
16 163
17 173
18 179
19 197
20 211
21 227
22 229
23 239
24 269
25 281
26 283
27 293
28 311
29 349
30 373
31 379
32 397
33 409
34 421
35 457
36 541
37 557
38 563
39 577
40 587
41 599
42 601
43 607
44 613
45 617
46 643
47 647
48 653
49 659
50 673
51 709
52 727
53 733
54 739
55 743

List of values

[3, 11, 13, 19, 23, 29, 41, 43, 47, 53, 71, 103, 107, 131, 149, 163, 173, 179, 197, 211, 227, 229, 239, 269, 281, 283, 293, 311, 349, 373, 379, 397, 409, 421, 457, 541, 557, 563, 577, 587, 599, 601, 607, 613, 617, 643, 647, 653, 659, 673, 709, 727, 733, 739, 743]