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.

A353596 Triangle read by rows, T(n, k) = [x^k] (-2)^n*GegenbauerC(n, -1/2, x).

Table of values

n a(n)
0 1
1 0
2 2
3 2
4 0
5 -2
6 0
7 -4
8 0
9 4
10 -2
11 0
12 12
13 0
14 -10
15 0
16 12
17 0
18 -40
19 0
20 28
21 4
22 0
23 -60
24 0
25 140
26 0
27 -84
28 0
29 -40
30 0
31 280
32 0
33 -504
34 0
35 264
36 -10
37 0
38 280
39 0
40 -1260
41 0
42 1848
43 0
44 -858
45 0
46 140
47 0
48 -1680
49 0
50 5544
51 0
52 -6864
53 0
54 2860
55 28
56 0
57 -1260
58 0
59 9240
60 0
61 -24024
62 0
63 25740
64 0
65 -9724

List of values

[1, 0, 2, 2, 0, -2, 0, -4, 0, 4, -2, 0, 12, 0, -10, 0, 12, 0, -40, 0, 28, 4, 0, -60, 0, 140, 0, -84, 0, -40, 0, 280, 0, -504, 0, 264, -10, 0, 280, 0, -1260, 0, 1848, 0, -858, 0, 140, 0, -1680, 0, 5544, 0, -6864, 0, 2860, 28, 0, -1260, 0, 9240, 0, -24024, 0, 25740, 0, -9724]