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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.

A080419 Triangle of generalized Chebyshev coefficients.

Table of values

n a(n)
1 1
2 4
3 1
4 15
5 7
6 1
7 54
8 36
9 10
10 1
11 189
12 162
13 66
14 13
15 1
16 648
17 675
18 360
19 105
20 16
21 1
22 2187
23 2673
24 1755
25 675
26 153
27 19
28 1
29 7290
30 10206
31 7938
32 3780
33 1134
34 210
35 22
36 1
37 24057
38 37908
39 34020
40 19278
41 7182
42 1764
43 276
44 25
45 1
46 78732
47 137781
48 139968
49 91854
50 40824
51 12474
52 2592

List of values

[1, 4, 1, 15, 7, 1, 54, 36, 10, 1, 189, 162, 66, 13, 1, 648, 675, 360, 105, 16, 1, 2187, 2673, 1755, 675, 153, 19, 1, 7290, 10206, 7938, 3780, 1134, 210, 22, 1, 24057, 37908, 34020, 19278, 7182, 1764, 276, 25, 1, 78732, 137781, 139968, 91854, 40824, 12474, 2592]