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.

A378062 Array read by ascending antidiagonals: A(n, k) = (n + 1)*binomial(2*k + n - 1, k - 1)^2 / (2*k + n - 1) for k > 0, and A(n, 0) = 0.

Table of values

n a(n)
0 0
1 0
2 1
3 0
4 1
5 3
6 0
7 1
8 8
9 20
10 0
11 1
12 15
13 75
14 175
15 0
16 1
17 24
18 189
19 784
20 1764
21 0
22 1
23 35
24 392
25 2352
26 8820
27 19404
28 0
29 1
30 48
31 720
32 5760
33 29700
34 104544
35 226512
36 0
37 1
38 63
39 1215
40 12375
41 81675
42 382239
43 1288287
44 2760615
45 0
46 1
47 80
48 1925
49 24200
50 196625
51 1145144
52 5010005
53 16359200
54 34763300

List of values

[0, 0, 1, 0, 1, 3, 0, 1, 8, 20, 0, 1, 15, 75, 175, 0, 1, 24, 189, 784, 1764, 0, 1, 35, 392, 2352, 8820, 19404, 0, 1, 48, 720, 5760, 29700, 104544, 226512, 0, 1, 63, 1215, 12375, 81675, 382239, 1288287, 2760615, 0, 1, 80, 1925, 24200, 196625, 1145144, 5010005, 16359200, 34763300]