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 | 4 |
| 3 | 24 |
| 4 | 7530 |
| 5 | 12100 |
| 6 | 32784 |
| 7 | 34950 |
| 8 | 69480 |
| 9 | 121104 |
| 10 | 420096 |
| 11 | 1018980 |
| 12 | 2846484 |
| 13 | 2946560 |
| 14 | 4160040 |
| 15 | 5387484 |
| 16 | 5512800 |
| 17 | 5729520 |
| 18 | 13108800 |
| 19 | 23524452 |
| 20 | 24799080 |
| 21 | 25885760 |
| 22 | 31382952 |
| 23 | 53344272 |
| 24 | 100929036 |
| 25 | 150057300 |
| 26 | 352636452 |