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 | 1 |
| 2 | 1 |
| 3 | 8 |
| 4 | 169 |
| 5 | 6392 |
| 6 | 352184 |
| 7 | 25097600 |
| 8 | 2152061145 |
| 9 | 212012802584 |
| 10 | 23263015359672 |
| 11 | 2781709560836960 |
| 12 | 356806123331844056 |
| 13 | 48516442013911012288 |
| 14 | 6930091952294051922080 |
| 15 | 1032505514388962439665280 |
| 16 | 159544871422153344631037625 |
| 17 | 25451354639006231998529405016 |