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 | 7 |
| 5 | 8 |
| 6 | 36 |
| 7 | 35 |
| 8 | 201 |
| 9 | 393 |
| 10 | 2370 |
| 11 | 3971 |
| 12 | 46094 |
| 13 | 66675 |
| 14 | 613439 |
| 15 | 2139350 |
| 16 | 10016839 |
| 17 | 23424253 |
| 18 | 294723254 |
| 19 | 465082931 |
| 20 | 4972761822 |
| 21 | 15773188813 |
| 22 | 90323063945 |
| 23 | 196342666487 |
| 24 | 2587522663248 |
| 25 | 4967200045397 |
| 26 | 39800811900389 |