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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.

A193450 Triangle of a binomial convolution sum related to Jacobsthal numbers.

Table of values

n a(n)
0 0
1 1
2 0
3 2
4 2
5 2
6 3
7 6
8 6
9 0
10 4
11 12
12 16
13 8
14 4
15 5
16 20
17 35
18 30
19 15
20 0
21 6
22 30
23 66
24 78
25 54
26 18
27 6
28 7
29 42
30 112
31 168
32 154
33 84
34 28
35 0
36 8
37 56
38 176
39 320
40 368
41 272
42 128
43 32
44 8
45 9
46 72
47 261
48 558
49 774
50 720
51 450
52 180
53 45
54 0
55 10
56 90
57 370
58 910
59 1480
60 1660
61 1300
62 700
63 250
64 50
65 10

List of values

[0, 1, 0, 2, 2, 2, 3, 6, 6, 0, 4, 12, 16, 8, 4, 5, 20, 35, 30, 15, 0, 6, 30, 66, 78, 54, 18, 6, 7, 42, 112, 168, 154, 84, 28, 0, 8, 56, 176, 320, 368, 272, 128, 32, 8, 9, 72, 261, 558, 774, 720, 450, 180, 45, 0, 10, 90, 370, 910, 1480, 1660, 1300, 700, 250, 50, 10]