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.

A131047 (1/2) * (A007318 - A007318^(-1)).

Table of values

n a(n)
1 1
2 0
3 2
4 1
5 0
6 3
7 0
8 4
9 0
10 4
11 1
12 0
13 10
14 0
15 5
16 0
17 6
18 0
19 20
20 0
21 6
22 1
23 0
24 21
25 0
26 35
27 0
28 7
29 0
30 8
31 0
32 56
33 0
34 56
35 0
36 8
37 1
38 0
39 36
40 0
41 126
42 0
43 84
44 0
45 9

List of values

[1, 0, 2, 1, 0, 3, 0, 4, 0, 4, 1, 0, 10, 0, 5, 0, 6, 0, 20, 0, 6, 1, 0, 21, 0, 35, 0, 7, 0, 8, 0, 56, 0, 56, 0, 8, 1, 0, 36, 0, 126, 0, 84, 0, 9]