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.

A360282 Triangle read by rows. T(n, k) = (1/2) * binomial(2*(n - k + 1), n - k + 1) * binomial(2*n - k, k - 1) for n > 0, T(0, 0) = 1.

Table of values

n a(n)
0 1
1 0
2 1
3 0
4 3
5 2
6 0
7 10
8 12
9 3
10 0
11 35
12 60
13 30
14 4
15 0
16 126
17 280
18 210
19 60
20 5
21 0
22 462
23 1260
24 1260
25 560
26 105
27 6
28 0
29 1716
30 5544
31 6930
32 4200
33 1260
34 168
35 7
36 0
37 6435
38 24024
39 36036
40 27720
41 11550
42 2520
43 252
44 8

List of values

[1, 0, 1, 0, 3, 2, 0, 10, 12, 3, 0, 35, 60, 30, 4, 0, 126, 280, 210, 60, 5, 0, 462, 1260, 1260, 560, 105, 6, 0, 1716, 5544, 6930, 4200, 1260, 168, 7, 0, 6435, 24024, 36036, 27720, 11550, 2520, 252, 8]