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 | 5 |
| 2 | 18 |
| 3 | 119 |
| 4 | 698 |
| 5 | 5449 |
| 6 | 41735 |
| 7 | 359207 |
| 8 | 3085197 |
| 9 | 27434602 |
| 10 | 243921771 |
| 11 | 2188569304 |
| 12 | 19636586858 |