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 | 20 |
| 2 | 106 |
| 3 | 2914 |
| 4 | 76066 |
| 5 | 48653026 |
| 6 | 1219116994 |
| 7 | 762810444034 |
| 8 | 19072324590946 |
| 9 | 11920834820287906 |
| 10 | 186264446293255209154 |
| 11 | 4656612255406143777826 |
| 12 | 72759575691550490581159234 |
| 13 | 45474735052173417717604422274 |
| 14 | 1136868376887903338795354772706 |
| 15 | 710542735733511371652904252645666 |