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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.

A063830 a(n+1) is the smallest odd m whose cototient equals a(n).

Table of values

n a(n)
1 1
2 3
3 9
4 21
5 45
6 117
7 297
8 585
9 1521
10 3105
11 6993
12 14553
13 43653
14 90885
15 185925
16 397125
17 847125
18 1813125
19 3238725
20 7556829
21 17253789
22 36910365
23 94571997
24 220301277
25 475043037
26 47979336637
27 183450404605
28 525019294077

List of values

[1, 3, 9, 21, 45, 117, 297, 585, 1521, 3105, 6993, 14553, 43653, 90885, 185925, 397125, 847125, 1813125, 3238725, 7556829, 17253789, 36910365, 94571997, 220301277, 475043037, 47979336637, 183450404605, 525019294077]

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

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