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 | 1512 |
| 2 | 327656 |
| 3 | 24189984 |
| 4 | 811401192 |
| 5 | 14500933104 |
| 6 | 156797510688 |
| 7 | 1163495873088 |
| 8 | 6597606440936 |
| 9 | 30505974273096 |
| 10 | 119983597365744 |
| 11 | 414352982942304 |
| 12 | 1283861585339424 |
| 13 | 3635198568784944 |
| 14 | 9523977599887936 |
| 15 | 23358459198626496 |
| 16 | 54039921152557032 |
| 17 | 118876818364991568 |