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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.

A309912 a(n) = Product_{p prime, p <= n} floor(n/p).

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 2
5 2
6 6
7 6
8 8
9 12
10 30
11 30
12 48
13 48
14 112
15 210
16 240
17 240
18 324
19 324
20 480
21 840
22 1848
23 1848
24 2304
25 2880
26 6240
27 7020
28 10080
29 10080
30 14400
31 14400
32 15360
33 25344
34 53856
35 78540
36 90720
37 90720
38 191520
39 311220
40 374400
41 374400
42 508032
43 508032
44 709632
45 855360
46 1788480
47 1788480

List of values

[1, 1, 1, 1, 2, 2, 6, 6, 8, 12, 30, 30, 48, 48, 112, 210, 240, 240, 324, 324, 480, 840, 1848, 1848, 2304, 2880, 6240, 7020, 10080, 10080, 14400, 14400, 15360, 25344, 53856, 78540, 90720, 90720, 191520, 311220, 374400, 374400, 508032, 508032, 709632, 855360, 1788480, 1788480]

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

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