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) |
|---|---|
| 2 | 6272 |
| 3 | 179928 |
| 4 | 6422528 |
| 5 | 248864088 |
| 6 | 9973238912 |
| 7 | 405583759128 |
| 8 | 16603641077888 |
| 9 | 681794737794072 |
| 10 | 28036464541430912 |
| 11 | 1153675328152653912 |
| 12 | 47487681076805107712 |
| 13 | 1954983080255585201112 |
| 14 | 80488830677377147883648 |
| 15 | 3313925147228829031300248 |
| 16 | 136444682110846678973251712 |