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 | 1 |
2 | 3 |
3 | 20 |
4 | 218 |
5 | 3514 |
6 | 77386 |
7 | 2220504 |
8 | 80085792 |
9 | 3533917704 |
10 | 186779329704 |
11 | 11623513158960 |
12 | 839754709300800 |
13 | 69603737430736560 |
14 | 6552428441847854640 |
15 | 694531396130434062720 |
16 | 82265733994694038784640 |
17 | 10816812417663289139328000 |
18 | 1569560370536552329095091200 |