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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.

A228955 Table: T(n,k) = n!*binomial(n+1,2*k).

Table of values

n a(n)
0 1
1 1
2 1
3 2
4 6
5 6
6 36
7 6
8 24
9 240
10 120
11 120
12 1800
13 1800
14 120
15 720
16 15120
17 25200
18 5040
19 5040
20 141120
21 352800
22 141120
23 5040
24 40320
25 1451520
26 5080320
27 3386880
28 362880
29 362880
30 16329600
31 76204800
32 76204800
33 16329600
34 362880
35 3628800
36 199584000
37 1197504000
38 1676505600
39 598752000
40 39916800

List of values

[1, 1, 1, 2, 6, 6, 36, 6, 24, 240, 120, 120, 1800, 1800, 120, 720, 15120, 25200, 5040, 5040, 141120, 352800, 141120, 5040, 40320, 1451520, 5080320, 3386880, 362880, 362880, 16329600, 76204800, 76204800, 16329600, 362880, 3628800, 199584000, 1197504000, 1676505600, 598752000, 39916800]

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