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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.

A253591 a(n) is the largest prime occurring (as a factor) in all terms up to A098550(n).

Table of values

n a(n)
2 2
3 3
4 3
5 3
6 3
7 5
8 7
9 7
10 7
11 7
12 7
13 7
14 7
15 7
16 7
17 7
18 7
19 7
20 11
21 13
22 13
23 13
24 13
25 13
26 13
27 13
28 17
29 17
30 17
31 17
32 17
33 17
34 17
35 17
36 17
37 17
38 17
39 17
40 17
41 19
42 19
43 19
44 19
45 19
46 19
47 19
48 19
49 23
50 23
51 23
52 23
53 23
54 23
55 23
56 23
57 23
58 23
59 29
60 31
61 31
62 31
63 31
64 31
65 31
66 31
67 31
68 31
69 31

List of values

[2, 3, 3, 3, 3, 5, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 11, 13, 13, 13, 13, 13, 13, 13, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 19, 19, 19, 19, 19, 19, 19, 19, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 29, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31]

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

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