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 | 0 |
| 2 | 0 |
| 3 | 1 |
| 4 | 5 |
| 5 | 88 |
| 6 | 5141 |
| 7 | 1052471 |
| 8 | 706498013 |
| 9 | 1581059448184 |
| 10 | 12140608800384871 |
| 11 | 328173098339746387013 |
| 12 | 31831409094194340869533850 |
| 13 | 11234306830091593156638822493531 |
| 14 | 14576263867574000953696306880725802283 |