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 | 36 |
| 2 | 708 |
| 3 | 24934 |
| 4 | 548130 |
| 5 | 14683998 |
| 6 | 380208068 |
| 7 | 9770273902 |
| 8 | 252723391836 |
| 9 | 6524302568076 |
| 10 | 168454068507408 |
| 11 | 4350085132885326 |
| 12 | 112325738184197486 |
| 13 | 2900465800983255400 |
| 14 | 74895716770099261710 |
| 15 | 1933949707170534389126 |