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 | 0 |
| 2 | 1 |
| 3 | 196 |
| 4 | 29241 |
| 5 | 1755625 |
| 6 | 261468900 |
| 7 | 38941102225 |
| 8 | 2337990844401 |
| 9 | 348201795147556 |
| 10 | 51858411008887561 |
| 11 | 3113535139359330841 |
| 12 | 463705205422871375236 |
| 13 | 69060571958250748760481 |
| 14 | 4146338334574433921200225 |
| 15 | 617522713934165528806340100 |
| 16 | 91968930524758079223806760025 |