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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.

A254706 a(n) = Catalan(2*n) mod prime(n).

Table of values

n a(n)
1 0
2 2
3 2
4 2
5 10
6 12
7 0
8 0
9 0
10 0
11 0
12 0
13 0
14 0
15 0
16 0
17 0
18 0
19 0
20 0
21 0
22 0
23 0
24 0
25 0
26 0
27 0
28 0
29 0
30 0
31 32
32 33
33 122
34 35
35 125
36 64
37 70
38 90
39 36
40 71
41 50
42 65
43 159
44 27
45 79
46 175
47 155
48 197
49 164
50 66
51 95
52 204
53 156
54 223
55 191
56 156
57 140
58 184
59 231
60 32
61 208
62 35
63 224
64 83
65 193
66 143
67 234
68 1
69 273

List of values

[0, 2, 2, 2, 10, 12, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 32, 33, 122, 35, 125, 64, 70, 90, 36, 71, 50, 65, 159, 27, 79, 175, 155, 197, 164, 66, 95, 204, 156, 223, 191, 156, 140, 184, 231, 32, 208, 35, 224, 83, 193, 143, 234, 1, 273]

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

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