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 | 11 |
| 3 | 121 |
| 4 | 1033 |
| 5 | 10423 |
| 6 | 131329 |
| 7 | 1039843 |
| 8 | 11939237 |
| 9 | 103333333 |
| 10 | 1137333347 |
| 11 | 10300335833 |
| 12 | 101393333923 |
| 13 | 1023239337799 |