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 | 2 |
| 1 | 28 |
| 2 | 1060 |
| 3 | 39612 |
| 4 | 1336090 |
| 5 | 42157238 |
| 6 | 1271530648 |
| 7 | 37178373556 |
| 8 | 1062895088910 |
| 9 | 29878892909030 |
| 10 | 828999068943506 |
| 11 | 22762324818835316 |
| 12 | 619715756464336328 |
| 13 | 16753554900339748756 |
| 14 | 450233110894196298638 |
| 15 | 12038074430656287496566 |
| 16 | 320451759639384414082274 |
| 17 | 8497567719126134980044214 |