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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.

A060360 a(n) = k - (largest prime < k), where k = lcm(1..n).

Table of values

n a(n)
3 1
4 1
5 1
6 1
7 1
8 1
9 17
10 17
11 19
12 19
13 23
14 23
15 23
16 17
17 43
18 43
19 1
20 1
21 1
22 1
23 1
24 1
25 29
26 29
27 41
28 41
29 1
30 1
31 43
32 1
33 1
34 1
35 1
36 1
37 43
38 43
39 43
40 43
41 47
42 47
43 83
44 83
45 83
46 83
47 1
48 1
49 83
50 83
51 83
52 83
53 61
54 61
55 61
56 61
57 61
58 61
59 149
60 149
61 1
62 1
63 1
64 97
65 97
66 97
67 89
68 89
69 89
70 89
71 109
72 109

List of values

[1, 1, 1, 1, 1, 1, 17, 17, 19, 19, 23, 23, 23, 17, 43, 43, 1, 1, 1, 1, 1, 1, 29, 29, 41, 41, 1, 1, 43, 1, 1, 1, 1, 1, 43, 43, 43, 43, 47, 47, 83, 83, 83, 83, 1, 1, 83, 83, 83, 83, 61, 61, 61, 61, 61, 61, 149, 149, 1, 1, 1, 97, 97, 97, 89, 89, 89, 89, 109, 109]

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

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