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 | 10 |
| 2 | 222 |
| 3 | 4120 |
| 4 | 65465 |
| 5 | 921010 |
| 6 | 11789302 |
| 7 | 139965348 |
| 8 | 1562685952 |
| 9 | 16583874090 |
| 10 | 168662333466 |
| 11 | 1654400665258 |
| 12 | 15732261029037 |
| 13 | 145639935220714 |
| 14 | 1317015705919726 |
| 15 | 11667008847929888 |
| 16 | 101490035584201884 |