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 | 68 |
| 3 | 995 |
| 4 | 7672 |
| 5 | 40614 |
| 6 | 166992 |
| 7 | 571626 |
| 8 | 1701480 |
| 9 | 4534959 |
| 10 | 11050468 |
| 11 | 24997973 |
| 12 | 53113424 |
| 13 | 106959580 |
| 14 | 205628736 |
| 15 | 379603812 |
| 16 | 676144944 |
| 17 | 1166649837 |
| 18 | 1956528420 |
| 19 | 3198236503 |
| 20 | 5108229896 |
| 21 | 7988730530 |
| 22 | 12255340240 |