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 | 8 |
| 2 | 168 |
| 3 | 5120 |
| 4 | 190120 |
| 5 | 8039808 |
| 6 | 373369920 |
| 7 | 18576523680 |
| 8 | 972362837160 |
| 9 | 52832252432960 |
| 10 | 2950644716576128 |
| 11 | 168192125309339040 |
| 12 | 9735527029198105408 |
| 13 | 570163460613978204800 |
| 14 | 33697054064651581144800 |
| 15 | 2005939326990647575285920 |
| 16 | 120109818840839172931095720 |