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 | 0 |
| 1 | 6 |
| 2 | 304 |
| 3 | 3159 |
| 4 | 16896 |
| 5 | 62500 |
| 6 | 182736 |
| 7 | 453789 |
| 8 | 999424 |
| 9 | 2007666 |
| 10 | 3750000 |
| 11 | 6603091 |
| 12 | 11073024 |
| 13 | 17822064 |
| 14 | 27697936 |
| 15 | 41765625 |
| 16 | 61341696 |
| 17 | 88031134 |
| 18 | 123766704 |
| 19 | 170850831 |
| 20 | 232000000 |
| 21 | 310391676 |
| 22 | 409713744 |
| 23 | 534216469 |
| 24 | 688766976 |
| 25 | 878906250 |
| 26 | 1110908656 |
| 27 | 1391843979 |