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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.

A059289 a(n) = 1 + (binomial(2n,n) mod n).

Table of values

n a(n)
1 1
2 1
3 3
4 3
5 3
6 1
7 3
8 7
9 3
10 7
11 3
12 5
13 3
14 7
15 1
16 7
17 3
18 7
19 3
20 1
21 7
22 7
23 3
24 13
25 3
26 7
27 21
28 1
29 3
30 5
31 3
32 7
33 10
34 7
35 8
36 17
37 3
38 7
39 21
40 21
41 3
42 1
43 3
44 5
45 1
46 7
47 3
48 13
49 3
50 7
51 4
52 45
53 3
54 7
55 33
56 33
57 40
58 7
59 3
60 37
61 3
62 7
63 13
64 7
65 6
66 1
67 3
68 37
69 67
70 41
71 3
72 37
73 3
74 7
75 46
76 33
77 1
78 67
79 3
80 21
81 21
82 7
83 3

List of values

[1, 1, 3, 3, 3, 1, 3, 7, 3, 7, 3, 5, 3, 7, 1, 7, 3, 7, 3, 1, 7, 7, 3, 13, 3, 7, 21, 1, 3, 5, 3, 7, 10, 7, 8, 17, 3, 7, 21, 21, 3, 1, 3, 5, 1, 7, 3, 13, 3, 7, 4, 45, 3, 7, 33, 33, 40, 7, 3, 37, 3, 7, 13, 7, 6, 1, 3, 37, 67, 41, 3, 37, 3, 7, 46, 33, 1, 67, 3, 21, 21, 7, 3]

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