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 | 2 |
| 3 | 4 |
| 4 | 11 |
| 5 | 13 |
| 6 | 26 |
| 7 | 154 |
| 8 | 196 |
| 9 | 436 |
| 10 | 529 |
| 11 | 1111 |
| 12 | 2563 |
| 13 | 2641 |
| 14 | 3233 |
| 15 | 3883 |
| 16 | 4256 |
| 17 | 9298 |
| 18 | 17293 |
| 19 | 23270 |
| 20 | 27197 |
| 21 | 129826 |