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 | 0 |
| 1 | 9 |
| 2 | 117 |
| 3 | 1323 |
| 4 | 14625 |
| 5 | 161019 |
| 6 | 1771497 |
| 7 | 19487043 |
| 8 | 214358625 |
| 9 | 2357947179 |
| 10 | 25937423577 |
| 11 | 285311668563 |
| 12 | 3138428372625 |
| 13 | 34522712135739 |
| 14 | 379749833566857 |
| 15 | 4177248169382883 |
| 16 | 45949729863506625 |
| 17 | 505447028499162699 |
| 18 | 5559917313491969337 |
| 19 | 61159090448414022003 |
| 20 | 672749994932558960625 |