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 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 5 |
| 5 | 11 |
| 6 | 28 |
| 7 | 65 |
| 8 | 72 |
| 9 | 361 |
| 10 | 479 |
| 11 | 494 |
| 12 | 599 |
| 13 | 1062 |
| 14 | 1094 |
| 15 | 1193 |
| 16 | 2827 |
| 17 | 3271 |
| 18 | 3388 |
| 19 | 3990 |
| 20 | 4418 |
| 21 | 11178 |
| 22 | 16294 |
| 23 | 25176 |
| 24 | 42500 |
| 25 | 68320 |
| 26 | 85698 |
| 27 | 145259 |
| 28 | 159119 |
| 29 | 169771 |
| 30 | 252665 |
| 31 | 412051 |