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 | 6 |
| 2 | 361 |
| 3 | 2172 |
| 4 | 130681 |
| 5 | 786258 |
| 6 | 47306161 |
| 7 | 284623224 |
| 8 | 17124699601 |
| 9 | 103032820830 |
| 10 | 6199093949401 |
| 11 | 37297596517236 |
| 12 | 2244054884983561 |
| 13 | 13501626906418602 |
| 14 | 812341669270099681 |
| 15 | 4887551642527016688 |
| 16 | 294065440220891100961 |
| 17 | 1769280192967873622454 |