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 | 390625 |
| 1 | 214358881 |
| 2 | 6975757441 |
| 3 | 78310985281 |
| 4 | 500246412961 |
| 5 | 2251875390625 |
| 6 | 7984925229121 |
| 7 | 23811286661761 |
| 8 | 62259690411361 |
| 9 | 146830437604321 |
| 10 | 318644812890625 |
| 11 | 645753531245761 |
| 12 | 1235736291547681 |
| 13 | 2252292232139041 |
| 14 | 3936588805702081 |
| 15 | 6634204312890625 |
| 16 | 10828567056280801 |