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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.

A283677 a(n) = lcm(b(b(n)), b(n-b(n)+1)) where b(n) = A004001(n).

Table of values

n a(n)
1 1
2 1
3 1
4 2
5 2
6 2
7 2
8 6
9 3
10 12
11 12
12 4
13 4
14 4
15 4
16 20
17 5
18 30
19 35
20 35
21 42
22 24
23 24
24 56
25 56
26 56
27 8
28 8
29 8
30 8
31 8
32 72
33 9
34 90
35 99
36 36
37 36
38 60
39 130
40 70
41 70
42 154
43 165
44 165
45 60
46 60
47 60
48 195
49 208
50 208
51 112
52 112
53 112
54 240
55 240
56 240
57 240
58 16
59 16
60 16
61 16
62 16
63 16
64 272
65 17
66 306
67 323
68 340
69 357
70 357
71 126
72 198
73 414
74 72
75 72
76 456
77 475
78 494

List of values

[1, 1, 1, 2, 2, 2, 2, 6, 3, 12, 12, 4, 4, 4, 4, 20, 5, 30, 35, 35, 42, 24, 24, 56, 56, 56, 8, 8, 8, 8, 8, 72, 9, 90, 99, 36, 36, 60, 130, 70, 70, 154, 165, 165, 60, 60, 60, 195, 208, 208, 112, 112, 112, 240, 240, 240, 240, 16, 16, 16, 16, 16, 16, 272, 17, 306, 323, 340, 357, 357, 126, 198, 414, 72, 72, 456, 475, 494]

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