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 | 7 |
| 3 | 8 |
| 4 | 55 |
| 5 | 63 |
| 6 | 433 |
| 7 | 496 |
| 8 | 3409 |
| 9 | 3905 |
| 10 | 26839 |
| 11 | 30744 |
| 12 | 211303 |
| 13 | 242047 |
| 14 | 1663585 |
| 15 | 1905632 |
| 16 | 13097377 |
| 17 | 15003009 |
| 18 | 103115431 |
| 19 | 118118440 |
| 20 | 811826071 |
| 21 | 929944511 |
| 22 | 6391493137 |
| 23 | 7321437648 |
| 24 | 50320119025 |