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 | 3 |
| 2 | 12 |
| 3 | 128 |
| 4 | 2048 |
| 5 | 81920 |
| 6 | 5242880 |
| 7 | 805306368 |
| 8 | 206158430208 |
| 9 | 123145302310912 |
| 10 | 126100789566373888 |
| 11 | 295147905179352825856 |
| 12 | 1208925819614629174706176 |
| 13 | 11141460353568422474092118016 |
| 14 | 182541686432865033815525261574144 |