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 | 21 |
| 2 | 729 |
| 3 | 8803 |
| 4 | 191192 |
| 5 | 3624914 |
| 6 | 66289769 |
| 7 | 1272836591 |
| 8 | 23896899569 |
| 9 | 450529429259 |
| 10 | 8509989217247 |
| 11 | 160423654526876 |
| 12 | 3026744089971807 |
| 13 | 57099188342748031 |
| 14 | 1077069529621543033 |
| 15 | 20318551052028606846 |
| 16 | 383290619891741250595 |