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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.

A128596 Triangle, read by rows, of coefficients of q^(nk) in the q-analog of the even double factorials: T(n,k) = [q^(nk)] Product_{j=1..n} (1-q^(2j))/(1-q) for n>0, with T(0,0)=1.

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 2
5 1
6 1
7 7
8 7
9 1
10 1
11 24
12 46
13 24
14 1
15 1
16 86
17 297
18 297
19 86
20 1
21 1
22 315
23 1919
24 3210
25 1919
26 315
27 1
28 1
29 1170
30 12399
31 32510
32 32510
33 12399
34 1170
35 1
36 1
37 4389
38 80241
39 318171
40 484636
41 318171
42 80241
43 4389
44 1
45 1
46 16588
47 520399
48 3054100
49 6730832
50 6730832

List of values

[1, 1, 1, 1, 2, 1, 1, 7, 7, 1, 1, 24, 46, 24, 1, 1, 86, 297, 297, 86, 1, 1, 315, 1919, 3210, 1919, 315, 1, 1, 1170, 12399, 32510, 32510, 12399, 1170, 1, 1, 4389, 80241, 318171, 484636, 318171, 80241, 4389, 1, 1, 16588, 520399, 3054100, 6730832, 6730832]