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 | 2315 |
| 3 | 374445 |
| 4 | 17703664 |
| 5 | 394340375 |
| 6 | 5265954441 |
| 7 | 48574262275 |
| 8 | 338837482880 |
| 9 | 1900477947429 |
| 10 | 8950536157375 |
| 11 | 36536761179281 |
| 12 | 132397570996560 |
| 13 | 433806511149115 |
| 14 | 1303971065324669 |
| 15 | 3637715990646375 |
| 16 | 9507513902672896 |
| 17 | 23461050872397545 |
| 18 | 55013865421504275 |