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 | 8 |
3 | 68 |
4 | 576 |
5 | 4880 |
6 | 41344 |
7 | 350272 |
8 | 2967552 |
9 | 25141504 |
10 | 213002240 |
11 | 1804583936 |
12 | 15288680448 |
13 | 129527779328 |
14 | 1097376956416 |
15 | 9297126768640 |
16 | 78766521974784 |
17 | 667320682872832 |
18 | 5653631550881792 |
19 | 47898335138545664 |
20 | 405801207311892480 |
21 | 3438002999049322496 |