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 | 6 |
| 2 | 78 |
| 3 | 1100 |
| 4 | 16310 |
| 5 | 248724 |
| 6 | 3863244 |
| 7 | 60784152 |
| 8 | 965571750 |
| 9 | 15451970820 |
| 10 | 248731275364 |
| 11 | 4022998982184 |
| 12 | 65326505787452 |
| 13 | 1064336612493000 |
| 14 | 17390322931354200 |
| 15 | 284844148339840560 |
| 16 | 4675649304522319110 |
| 17 | 76895312195988615780 |