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 | 7 |
| 4 | 10 |
| 5 | 37 |
| 6 | 34 |
| 7 | 107 |
| 8 | 262 |
| 9 | 661 |
| 10 | 2236 |
| 11 | 5665 |
| 12 | 13350 |
| 13 | 35141 |
| 14 | 260188 |
| 15 | 382614 |
| 16 | 418134 |
| 17 | 9552743681459 |
| 18 | 83369851038 |
| 19 | 785598689 |