cp's OEIS Frontend

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.

A122366 Triangle read by rows: T(n,k) = binomial(2*n+1,k), 0 <= k <= n.

Table of values

n a(n)
0 1
1 1
2 3
3 1
4 5
5 10
6 1
7 7
8 21
9 35
10 1
11 9
12 36
13 84
14 126
15 1
16 11
17 55
18 165
19 330
20 462
21 1
22 13
23 78
24 286
25 715
26 1287
27 1716
28 1
29 15
30 105
31 455
32 1365
33 3003
34 5005
35 6435
36 1
37 17
38 136
39 680
40 2380
41 6188
42 12376
43 19448
44 24310
45 1
46 19
47 171
48 969
49 3876
50 11628
51 27132
52 50388
53 75582
54 92378
55 1
56 21

List of values

[1, 1, 3, 1, 5, 10, 1, 7, 21, 35, 1, 9, 36, 84, 126, 1, 11, 55, 165, 330, 462, 1, 13, 78, 286, 715, 1287, 1716, 1, 15, 105, 455, 1365, 3003, 5005, 6435, 1, 17, 136, 680, 2380, 6188, 12376, 19448, 24310, 1, 19, 171, 969, 3876, 11628, 27132, 50388, 75582, 92378, 1, 21]