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 | 2701 |
| 2 | 12481 |
| 3 | 57585 |
| 4 | 264981 |
| 5 | 1216081 |
| 6 | 5592169 |
| 7 | 25710385 |
| 8 | 118192273 |
| 9 | 543322645 |
| 10 | 2497751105 |
| 11 | 11482493485 |
| 12 | 52786380721 |
| 13 | 242665353541 |
| 14 | 1115563238521 |
| 15 | 5128382983861 |
| 16 | 23575813154485 |
| 17 | 108380944031221 |
| 18 | 498240685840957 |