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 | 3 |
| 4 | 5 |
| 5 | 7 |
| 6 | 14 |
| 7 | 52 |
| 8 | 76 |
| 9 | 2528 |
| 10 | 9536 |
| 11 | 9664 |
| 12 | 35456 |
| 13 | 138496 |
| 14 | 8456192 |
| 15 | 33665024 |
| 16 | 33673216 |
| 17 | 537444352 |
| 18 | 2148958208 |
| 19 | 137454419968 |