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) |
|---|---|
| 0 | 17 |
| 1 | 663 |
| 2 | 25857 |
| 3 | 1008423 |
| 4 | 39328497 |
| 5 | 1533811383 |
| 6 | 59818643937 |
| 7 | 2332927113543 |
| 8 | 90984157428177 |
| 9 | 3548382139698903 |
| 10 | 138386903448257217 |
| 11 | 5397089234482031463 |
| 12 | 210486480144799227057 |
| 13 | 8208972725647169855223 |
| 14 | 320149936300239624353697 |
| 15 | 12485847515709345349794183 |