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) |
---|---|
1 | 1 |
2 | 1 |
3 | 3 |
4 | 16 |
5 | 120 |
6 | 1156 |
7 | 13608 |
8 | 189316 |
9 | 3039060 |
10 | 55291336 |
11 | 1124309208 |
12 | 25268818576 |
13 | 622008616320 |
14 | 16642670404816 |
15 | 480923246983728 |
16 | 14926731083999296 |
17 | 495243684302520000 |
18 | 17491488288340789696 |
19 | 655224017429959987968 |
20 | 25947019896579324410176 |
21 | 1083050878686674070676800 |