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.
n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 0 |
3 | 6 |
4 | 24 |
5 | 60 |
6 | 1560 |
7 | 25410 |
8 | 242256 |
9 | 3508344 |
10 | 85882320 |
11 | 1724406750 |
12 | 32784999720 |
13 | 839182482996 |
14 | 24162605028744 |
15 | 659439484706730 |
16 | 19415319297457440 |
17 | 658935736181053680 |
18 | 23245444335085544736 |
19 | 835819877947421773494 |
20 | 32462532011236141677240 |