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 | 1025 |
| 2 | 60073 |
| 3 | 1107625 |
| 4 | 10814201 |
| 5 | 70231801 |
| 6 | 342941425 |
| 7 | 1356217073 |
| 8 | 4560526225 |
| 9 | 13486784401 |
| 10 | 35937424601 |
| 11 | 87854788825 |
| 12 | 199775856073 |
| 13 | 427113146825 |
| 14 | 865905045601 |
| 15 | 1676162018401 |
| 16 | 3115505528225 |