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 | 13 |
| 3 | 119 |
| 4 | 1219 |
| 5 | 12115 |
| 6 | 121054 |
| 7 | 1210480 |
| 8 | 12101765 |
| 9 | 121011208 |
| 10 | 1210128842 |