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 | 3 |
| 2 | 52 |
| 3 | 680 |
| 4 | 9084 |
| 5 | 120815 |
| 6 | 1608681 |
| 7 | 21418808 |
| 8 | 285190208 |
| 9 | 3797277789 |
| 10 | 50560399640 |
| 11 | 673206912325 |
| 12 | 8963686254378 |
| 13 | 119350632636165 |
| 14 | 1589142359440249 |
| 15 | 21159279866124406 |
| 16 | 281733805537736001 |
| 17 | 3751258912615316186 |