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 | 0 |
1 | 0 |
2 | 2 |
3 | 6 |
4 | 24 |
5 | 130 |
6 | 900 |
7 | 7574 |
8 | 74928 |
9 | 851274 |
10 | 10916700 |
11 | 155919742 |
12 | 2453941512 |
13 | 42188446898 |
14 | 786563892660 |
15 | 15805750451430 |
16 | 340522975054176 |
17 | 7829628493247002 |
18 | 191363568551328780 |
19 | 4954089147107164238 |