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 | 1 |
| 1 | 70 |
| 2 | 2695 |
| 3 | 75460 |
| 4 | 1716715 |
| 5 | 33647614 |
| 6 | 588833245 |
| 7 | 9421331920 |
| 8 | 140142312310 |
| 9 | 1961992372340 |
| 10 | 26094498552122 |
| 11 | 332111799754280 |
| 12 | 4068369546989930 |
| 13 | 48194531556649940 |
| 14 | 554237112901474310 |
| 15 | 6207455664496512272 |
| 16 | 67894046330430602975 |