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 | 13 |
| 2 | 295 |
| 3 | 330 |
| 4 | 364 |
| 5 | 1085 |
| 6 | 5005 |
| 7 | 6305 |
| 8 | 15516 |
| 9 | 415151 |
| 10 | 1990368 |
| 11 | 34011252 |
| 12 | 42016497 |
| 13 | 79565281 |
| 14 | 139107722 |
| 15 | 254801664 |
| 16 | 418093065 |
| 17 | 667378972 |
| 18 | 1214995500 |
| 19 | 3609736702 |
| 20 | 4353556896 |