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 | 1 |
| 2 | 12 |
| 3 | 105 |
| 4 | 780 |
| 5 | 5452 |
| 6 | 39979 |
| 7 | 336081 |
| 8 | 3263355 |
| 9 | 34518027 |
| 10 | 372779338 |
| 11 | 3957184040 |
| 12 | 40729856248 |
| 13 | 406862880846 |
| 14 | 3979167973684 |
| 15 | 38556471560342 |
| 16 | 374259579575061 |