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 | 4 |
| 3 | 88 |
| 4 | 1228 |
| 5 | 187 |
| 6 | 4562 |
| 7 | 8183 |
| 8 | 167378 |
| 9 | 35419 |
| 10 | 77421 |
| 11 | 5593723 |
| 12 | 3306511 |
| 13 | 83205705 |
| 14 | 22413581 |
| 15 | 24296709 |
| 16 | 35457806 |
| 17 | 26593355 |
| 18 | 19945016 |
| 19 | 80184972 |
| 20 | 389460601 |