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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.

A139550 a(n) = lcm(1..floor(n/2)).

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 2
5 2
6 6
7 6
8 12
9 12
10 60
11 60
12 60
13 60
14 420
15 420
16 840
17 840
18 2520
19 2520
20 2520
21 2520
22 27720
23 27720
24 27720
25 27720
26 360360
27 360360
28 360360
29 360360
30 360360
31 360360
32 720720
33 720720
34 12252240
35 12252240
36 12252240
37 12252240
38 232792560
39 232792560

List of values

[1, 1, 1, 1, 2, 2, 6, 6, 12, 12, 60, 60, 60, 60, 420, 420, 840, 840, 2520, 2520, 2520, 2520, 27720, 27720, 27720, 27720, 360360, 360360, 360360, 360360, 360360, 360360, 720720, 720720, 12252240, 12252240, 12252240, 12252240, 232792560, 232792560]

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

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