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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.

A177808 Triangle T(n,m) = binomial(4*n, 4*m), 0 <= m <= n, read by rows.

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 70
5 1
6 1
7 495
8 495
9 1
10 1
11 1820
12 12870
13 1820
14 1
15 1
16 4845
17 125970
18 125970
19 4845
20 1
21 1
22 10626
23 735471
24 2704156
25 735471
26 10626
27 1
28 1
29 20475
30 3108105
31 30421755
32 30421755
33 3108105
34 20475
35 1
36 1
37 35960
38 10518300
39 225792840
40 601080390
41 225792840
42 10518300
43 35960
44 1
45 1
46 58905
47 30260340
48 1251677700
49 7307872110
50 7307872110
51 1251677700
52 30260340
53 58905
54 1

List of values

[1, 1, 1, 1, 70, 1, 1, 495, 495, 1, 1, 1820, 12870, 1820, 1, 1, 4845, 125970, 125970, 4845, 1, 1, 10626, 735471, 2704156, 735471, 10626, 1, 1, 20475, 3108105, 30421755, 30421755, 3108105, 20475, 1, 1, 35960, 10518300, 225792840, 601080390, 225792840, 10518300, 35960, 1, 1, 58905, 30260340, 1251677700, 7307872110, 7307872110, 1251677700, 30260340, 58905, 1]

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