cp's OEIS Frontend

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.

A309206 a(n) = (2*n)!/A309205(n).

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 5
5 1
6 1
7 1
8 7
9 1
10 1
11 1
12 13
13 19
14 5
15 1
16 221
17 1
18 1
19 1
20 1
21 1
22 13
23 17
24 5
25 1
26 47
27 4913
28 29
29 7
30 11
31 53
32 1
33 47
34 325
35 13
36 1147
37 41
38 1
39 1
40 41
41 1081
42 11
43 1
44 5
45 1
46 1
47 83
48 1
49 1
50 133
51 1
52 2491
53 97
54 5
55 103
56 61
57 1
58 1
59 19
60 226493
61 1
62 1
63 1
64 5
65 31
66 1
67 1
68 1
69 1271
70 289

List of values

[1, 1, 1, 1, 5, 1, 1, 1, 7, 1, 1, 1, 13, 19, 5, 1, 221, 1, 1, 1, 1, 1, 13, 17, 5, 1, 47, 4913, 29, 7, 11, 53, 1, 47, 325, 13, 1147, 41, 1, 1, 41, 1081, 11, 1, 5, 1, 1, 83, 1, 1, 133, 1, 2491, 97, 5, 103, 61, 1, 1, 19, 226493, 1, 1, 1, 5, 31, 1, 1, 1, 1271, 289]