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 | 12 |
| 2 | 144 |
| 3 | 1171 |
| 4 | 11227 |
| 5 | 105836 |
| 6 | 981850 |
| 7 | 9196215 |
| 8 | 85977231 |
| 9 | 803283624 |
| 10 | 7509476422 |
| 11 | 70190937945 |
| 12 | 656058072353 |
| 13 | 6132248125196 |
| 14 | 57318047597584 |
| 15 | 535750978547941 |
| 16 | 5007668680211309 |
| 17 | 46806669029193682 |
| 18 | 437501879260273952 |