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.

A158868 Triangle T(n, k) = (2*n+1)!! * 2^(floor((n-1)/2) + floor(k/2) + 1) * Beta(floor(n/2) + floor((k-1)/2) + 2, floor((n-1)/2) + floor(k/2) + 2), read by rows.

Table of values

n a(n)
1 1
2 5
3 2
4 14
5 7
6 6
7 126
8 54
9 54
10 24
11 594
12 297
13 264
14 132
15 120
16 7722
17 3432
18 3432
19 1560
20 1560
21 720
22 51480
23 25740
24 23400
25 11700
26 10800
27 5400
28 5040
29 875160
30 397800
31 397800
32 183600
33 183600
34 85680
35 85680
36 40320
37 7558200
38 3779100
39 3488400
40 1744200
41 1627920
42 813960
43 766080
44 383040
45 362880

List of values

[1, 5, 2, 14, 7, 6, 126, 54, 54, 24, 594, 297, 264, 132, 120, 7722, 3432, 3432, 1560, 1560, 720, 51480, 25740, 23400, 11700, 10800, 5400, 5040, 875160, 397800, 397800, 183600, 183600, 85680, 85680, 40320, 7558200, 3779100, 3488400, 1744200, 1627920, 813960, 766080, 383040, 362880]