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 | 5 |
3 | 10 |
4 | 105 |
5 | 620 |
6 | 5725 |
7 | 52950 |
8 | 571025 |
9 | 6686200 |
10 | 85871925 |
11 | 1193029250 |
12 | 17846277625 |
13 | 285737086500 |
14 | 4874590170125 |
15 | 88245858436750 |
16 | 1689282139310625 |
17 | 34088182903910000 |
18 | 723088091207873125 |
19 | 16083522103093616250 |
20 | 374280288623526655625 |
21 | 9093957982779894737500 |