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 | 1 |
| 2 | 19 |
| 3 | 825 |
| 4 | 64673 |
| 5 | 8692845 |
| 6 | 2075942407 |
| 7 | 947096199049 |
| 8 | 871511924986417 |
| 9 | 1641139351778666025 |
| 10 | 6294238937330719034075 |
| 11 | 48874098188760259868846393 |
| 12 | 765415330468764867988682358017 |
| 13 | 24118078877292963934598044030624645 |
| 14 | 1526534496216469250983883702116378352415 |