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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.

A250031 a(n) is the numerator of the density of natural numbers m such that gcd(m,floor(m/n))=1.

Table of values

n a(n)
1 0
2 1
3 1
4 13
5 8
6 26
7 19
8 163
9 361
10 1223
11 1307
12 16477
13 5749
14 83977
15 88267
16 280817
17 147916
18 1377406
19 2839897
20 58552633
21 60492571
22 63263911
23 65468386
24 403117367
25 549883871
26 579629587
27 596790577
28 1864736021
29 1912541636
30 29293503812
31 59449633388
32 969992016739

List of values

[0, 1, 1, 13, 8, 26, 19, 163, 361, 1223, 1307, 16477, 5749, 83977, 88267, 280817, 147916, 1377406, 2839897, 58552633, 60492571, 63263911, 65468386, 403117367, 549883871, 579629587, 596790577, 1864736021, 1912541636, 29293503812, 59449633388, 969992016739]

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

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