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 | 4 |
| 2 | 434 |
| 3 | 505 |
| 4 | 18781 |
| 5 | 27072 |
| 6 | 33633 |
| 7 | 1254521 |
| 8 | 3360633 |
| 9 | 5989895 |
| 10 | 9145419 |
| 11 | 10411401 |
| 12 | 161101161 |
| 13 | 390949093 |
| 14 | 795303597 |
| 15 | 935424539 |
| 16 | 25127372152 |
| 17 | 77753535777 |
| 18 | 1997671767991 |
| 19 | 2300809080032 |
| 20 | 3754911194573 |
| 21 | 6476856586746 |
| 22 | 9825337335289 |