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.

A284467 Expansion of Product_{k>=1} (1 + x^(2*k-1))^(2*k-1)/(1 + x^(2*k))^(2*k).

Table of values

n a(n)
0 1
1 1
2 -2
3 1
4 2
5 -2
6 0
7 -5
8 10
9 1
10 -15
11 10
12 -1
13 18
14 -39
15 4
16 50
17 -24
18 -14
19 -69
20 165
21 -70
22 -83
23 -20
24 154
25 161
26 -550
27 313
28 55
29 410
30 -960
31 102
32 1074
33 -406
34 -506
35 -1344
36 3581
37 -1791
38 -833
39 -1833
40 4995
41 205
42 -6993
43 2982
44 2461
45 7649
46 -19791
47 9495
48 4986
49 9581
50 -26745
51 0

List of values

[1, 1, -2, 1, 2, -2, 0, -5, 10, 1, -15, 10, -1, 18, -39, 4, 50, -24, -14, -69, 165, -70, -83, -20, 154, 161, -550, 313, 55, 410, -960, 102, 1074, -406, -506, -1344, 3581, -1791, -833, -1833, 4995, 205, -6993, 2982, 2461, 7649, -19791, 9495, 4986, 9581, -26745, 0]