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 | 2 |
| 3 | 4 |
| 4 | 10 |
| 5 | 70 |
| 6 | 134 |
| 7 | 146 |
| 8 | 190 |
| 9 | 218 |
| 10 | 292 |
| 11 | 478 |
| 12 | 7136 |
| 13 | 15964 |
| 14 | 19988 |
| 15 | 100790 |
| 16 | 111442 |
| 17 | 181874 |
| 18 | 202112 |