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 | 36 |
| 2 | 810 |
| 3 | 14580 |
| 4 | 229635 |
| 5 | 3306744 |
| 6 | 44641044 |
| 7 | 573956280 |
| 8 | 7102708965 |
| 9 | 85232507580 |
| 10 | 997220338686 |
| 11 | 11422705697676 |
| 12 | 128505439098855 |
| 13 | 1423444863864240 |
| 14 | 15556218869373480 |
| 15 | 168007163789233584 |