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 | 9 |
| 2 | 119 |
| 3 | 1329 |
| 4 | 14639 |
| 5 | 161049 |
| 6 | 1771559 |
| 7 | 19487169 |
| 8 | 214358879 |
| 9 | 2357947689 |
| 10 | 25937424599 |
| 11 | 285311670609 |
| 12 | 3138428376719 |
| 13 | 34522712143929 |
| 14 | 379749833583239 |
| 15 | 4177248169415649 |
| 16 | 45949729863572159 |
| 17 | 505447028499293769 |
| 18 | 5559917313492231479 |
| 19 | 61159090448414546289 |
| 20 | 672749994932560009199 |