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 | 0 |
| 2 | 62 |
| 3 | 684 |
| 4 | 10056 |
| 5 | 141018 |
| 6 | 2053994 |
| 7 | 30004158 |
| 8 | 443275636 |
| 9 | 6591532114 |
| 10 | 98620717026 |
| 11 | 1483077002788 |
| 12 | 22402256622648 |
| 13 | 339716751362128 |
| 14 | 5169528508115318 |
| 15 | 78910865975553660 |
| 16 | 1207934007828690708 |
| 17 | 18537787151292561428 |