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 | 81 |
| 3 | 400 |
| 4 | 32400 |
| 5 | 1705636 |
| 6 | 3648100 |
| 7 | 138156516 |
| 8 | 295496100 |
| 9 | 1055340196 |
| 10 | 1476326929 |
| 11 | 2263475776 |
| 12 | 2323432804 |
| 13 | 2592846400 |
| 14 | 2661528100 |
| 15 | 7036525456 |
| 16 | 10994571025 |
| 17 | 17604513124 |
| 18 | 39415749156 |
| 19 | 61436066769 |
| 20 | 85482555876 |
| 21 | 90526367376 |
| 22 | 97577515876 |
| 23 | 98551417041 |