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.

A367023 Triangle read by rows, T(n, k) = [x^k] p(n), where p(n) = hypergeom([1/2, -n - 1, -n], [2, 2], 4*x).

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 3
5 2
6 1
7 6
8 12
9 5
10 1
11 10
12 40
13 50
14 14
15 1
16 15
17 100
18 250
19 210
20 42
21 1
22 21
23 210
24 875
25 1470
26 882
27 132
28 1
29 28
30 392
31 2450
32 6860
33 8232
34 3696
35 429
36 1
37 36
38 672
39 5880
40 24696
41 49392
42 44352
43 15444
44 1430
45 1
46 45
47 1080
48 12600
49 74088
50 222264
51 332640
52 231660
53 64350
54 4862

List of values

[1, 1, 1, 1, 3, 2, 1, 6, 12, 5, 1, 10, 40, 50, 14, 1, 15, 100, 250, 210, 42, 1, 21, 210, 875, 1470, 882, 132, 1, 28, 392, 2450, 6860, 8232, 3696, 429, 1, 36, 672, 5880, 24696, 49392, 44352, 15444, 1430, 1, 45, 1080, 12600, 74088, 222264, 332640, 231660, 64350, 4862]