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.

A128059 a(n) = numerator((2*n-1)^2/(2*(2*n)!)).

Table of values

n a(n)
0 1
1 1
2 3
3 5
4 7
5 1
6 11
7 13
8 1
9 17
10 19
11 1
12 23
13 1
14 1
15 29
16 31
17 1
18 1
19 37
20 1
21 41
22 43
23 1
24 47
25 1
26 1
27 53
28 1
29 1
30 59
31 61
32 1
33 1
34 67
35 1
36 71
37 73
38 1
39 1
40 79
41 1
42 83
43 1
44 1
45 89
46 1
47 1
48 1
49 97
50 1
51 101
52 103
53 1
54 107
55 109
56 1
57 113
58 1
59 1
60 1
61 1
62 1
63 1
64 127

List of values

[1, 1, 3, 5, 7, 1, 11, 13, 1, 17, 19, 1, 23, 1, 1, 29, 31, 1, 1, 37, 1, 41, 43, 1, 47, 1, 1, 53, 1, 1, 59, 61, 1, 1, 67, 1, 71, 73, 1, 1, 79, 1, 83, 1, 1, 89, 1, 1, 1, 97, 1, 101, 103, 1, 107, 109, 1, 113, 1, 1, 1, 1, 1, 1, 127]