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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.

A038607 a(n) is the smallest prime number k such that k > n*pi(k), where pi(k) denotes the prime counting function.

Table of values

n a(n)
1 2
2 11
3 37
4 127
5 347
6 1087
7 3109
8 8419
9 24317
10 64553
11 175211
12 480881
13 1304707
14 3523901
15 9558533
16 25874843
17 70115473
18 189961529
19 514272533
20 1394193607
21 3779851091
22 10246935679
23 27788566133
24 75370121191
25 204475052401
26 554805820711
27 1505578023841
28 4086199302113
29 11091501631019
30 30109570413007

List of values

[2, 11, 37, 127, 347, 1087, 3109, 8419, 24317, 64553, 175211, 480881, 1304707, 3523901, 9558533, 25874843, 70115473, 189961529, 514272533, 1394193607, 3779851091, 10246935679, 27788566133, 75370121191, 204475052401, 554805820711, 1505578023841, 4086199302113, 11091501631019, 30109570413007]

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

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