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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.

A178301 Triangle T(n,k) = binomial(n,k)*binomial(n+k+1,n+1) read by rows, 0 <= k <= n.

Table of values

n a(n)
0 1
1 1
2 3
3 1
4 8
5 10
6 1
7 15
8 45
9 35
10 1
11 24
12 126
13 224
14 126
15 1
16 35
17 280
18 840
19 1050
20 462
21 1
22 48
23 540
24 2400
25 4950
26 4752
27 1716
28 1
29 63
30 945
31 5775
32 17325
33 27027
34 21021
35 6435
36 1
37 80
38 1540
39 12320
40 50050
41 112112
42 140140
43 91520
44 24310
45 1
46 99
47 2376
48 24024
49 126126
50 378378
51 672672
52 700128
53 393822
54 92378

List of values

[1, 1, 3, 1, 8, 10, 1, 15, 45, 35, 1, 24, 126, 224, 126, 1, 35, 280, 840, 1050, 462, 1, 48, 540, 2400, 4950, 4752, 1716, 1, 63, 945, 5775, 17325, 27027, 21021, 6435, 1, 80, 1540, 12320, 50050, 112112, 140140, 91520, 24310, 1, 99, 2376, 24024, 126126, 378378, 672672, 700128, 393822, 92378]