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 | 63 |
| 2 | 3969 |
| 3 | 157182 |
| 4 | 5843562 |
| 5 | 185900905 |
| 6 | 5520230601 |
| 7 | 151596664089 |
| 8 | 3948855568663 |
| 9 | 97889332200024 |
| 10 | 2332332672746881 |
| 11 | 53631396879772976 |
| 12 | 1196249503631460096 |
| 13 | 25965520951599991001 |
| 14 | 550166212967293315266 |
| 15 | 11406213718800127365141 |