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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.

A028330 Elements to the right of the central elements of the even-Pascal triangle A028326.

Table of values

n a(n)
0 2
1 2
2 6
3 2
4 8
5 2
6 20
7 10
8 2
9 30
10 12
11 2
12 70
13 42
14 14
15 2
16 112
17 56
18 16
19 2
20 252
21 168
22 72
23 18
24 2
25 420
26 240
27 90
28 20
29 2
30 924
31 660
32 330
33 110
34 22
35 2
36 1584
37 990
38 440
39 132
40 24
41 2
42 3432
43 2574
44 1430
45 572
46 156
47 26
48 2
49 6006
50 4004
51 2002
52 728
53 182
54 28
55 2
56 12870
57 10010
58 6006
59 2730

List of values

[2, 2, 6, 2, 8, 2, 20, 10, 2, 30, 12, 2, 70, 42, 14, 2, 112, 56, 16, 2, 252, 168, 72, 18, 2, 420, 240, 90, 20, 2, 924, 660, 330, 110, 22, 2, 1584, 990, 440, 132, 24, 2, 3432, 2574, 1430, 572, 156, 26, 2, 6006, 4004, 2002, 728, 182, 28, 2, 12870, 10010, 6006, 2730]