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 | 6 |
| 5 | 10 |
| 6 | 12 |
| 7 | 13 |
| 8 | 22 |
| 9 | 32 |
| 10 | 46 |
| 11 | 61 |
| 12 | 68 |
| 13 | 90 |
| 14 | 110 |
| 15 | 652 |
| 16 | 1608 |
| 17 | 1904 |
| 18 | 2003 |
| 19 | 3038 |
| 20 | 3086 |
| 21 | 9580 |
| 22 | 9698 |
| 23 | 10639 |
| 24 | 14461 |