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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.

A370262 Triangle read by rows: T(n, k) = binomial(n+k, n-k)/(2*k + 1) * (2*n + 1)^k.

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 5
5 5
6 1
7 14
8 49
9 49
10 1
11 30
12 243
13 729
14 729
15 1
16 55
17 847
18 5324
19 14641
20 14641
21 1
22 91
23 2366
24 26364
25 142805
26 371293
27 371293
28 1
29 140
30 5670
31 101250
32 928125
33 4556250
34 11390625
35 11390625
36 1
37 204
38 12138
39 324258
40 4593655
41 36916282
42 168962983
43 410338673
44 410338673

List of values

[1, 1, 1, 1, 5, 5, 1, 14, 49, 49, 1, 30, 243, 729, 729, 1, 55, 847, 5324, 14641, 14641, 1, 91, 2366, 26364, 142805, 371293, 371293, 1, 140, 5670, 101250, 928125, 4556250, 11390625, 11390625, 1, 204, 12138, 324258, 4593655, 36916282, 168962983, 410338673, 410338673]