cp's OEIS Frontend

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.

A239585 Prime factor <= other prime factor of n-th brilliant number, cf. A078972.

Table of values

n a(n)
1 2
2 2
3 3
4 2
5 2
6 3
7 3
8 5
9 5
10 7
11 11
12 11
13 13
14 11
15 11
16 13
17 13
18 11
19 17
20 13
21 11
22 17
23 11
24 19
25 13
26 17
27 13
28 11
29 19
30 11
31 11
32 13
33 17
34 11
35 17
36 23
37 13
38 19
39 13
40 11
41 19
42 13
43 17
44 11
45 23
46 11
47 13
48 17
49 19
50 23
51 17
52 11
53 13
54 19
55 11
56 13
57 17
58 11
59 19
60 29
61 23
62 11
63 13
64 19
65 29
66 17
67 11

List of values

[2, 2, 3, 2, 2, 3, 3, 5, 5, 7, 11, 11, 13, 11, 11, 13, 13, 11, 17, 13, 11, 17, 11, 19, 13, 17, 13, 11, 19, 11, 11, 13, 17, 11, 17, 23, 13, 19, 13, 11, 19, 13, 17, 11, 23, 11, 13, 17, 19, 23, 17, 11, 13, 19, 11, 13, 17, 11, 19, 29, 23, 11, 13, 19, 29, 17, 11]

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

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