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 | 1 |
2 | 3 |
3 | 7 |
4 | 30 |
5 | 144 |
6 | 876 |
7 | 6084 |
8 | 48816 |
9 | 438624 |
10 | 4389120 |
11 | 48263040 |
12 | 579242880 |
13 | 7529552640 |
14 | 105417365760 |
15 | 1581231456000 |
16 | 25299906508800 |
17 | 430096581734400 |
18 | 7741753102540800 |
19 | 147093162635059200 |
20 | 2941864569520128000 |