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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.

A317848 Multiplicative with a(p^e) = binomial(2*e, e).

Table of values

n a(n)
1 1
2 2
3 2
4 6
5 2
6 4
7 2
8 20
9 6
10 4
11 2
12 12
13 2
14 4
15 4
16 70
17 2
18 12
19 2
20 12
21 4
22 4
23 2
24 40
25 6
26 4
27 20
28 12
29 2
30 8
31 2
32 252
33 4
34 4
35 4
36 36
37 2
38 4
39 4
40 40
41 2
42 8
43 2
44 12
45 12
46 4
47 2
48 140
49 6
50 12
51 4
52 12
53 2
54 40
55 4
56 40
57 4
58 4
59 2
60 24
61 2
62 4
63 12
64 924
65 4
66 8
67 2
68 12
69 4
70 8
71 2
72 120
73 2
74 4
75 12
76 12
77 4
78 8
79 2
80 140

List of values

[1, 2, 2, 6, 2, 4, 2, 20, 6, 4, 2, 12, 2, 4, 4, 70, 2, 12, 2, 12, 4, 4, 2, 40, 6, 4, 20, 12, 2, 8, 2, 252, 4, 4, 4, 36, 2, 4, 4, 40, 2, 8, 2, 12, 12, 4, 2, 140, 6, 12, 4, 12, 2, 40, 4, 40, 4, 4, 2, 24, 2, 4, 12, 924, 4, 8, 2, 12, 4, 8, 2, 120, 2, 4, 12, 12, 4, 8, 2, 140]

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