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 | 2 |
| 2 | 15 |
| 3 | 123 |
| 4 | 1074 |
| 5 | 9623 |
| 6 | 87882 |
| 7 | 814183 |
| 8 | 7618317 |
| 9 | 71838469 |
| 10 | 681591775 |
| 11 | 6499182987 |