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 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 4 |
| 6 | 10 |
| 7 | 8 |
| 8 | 23 |
| 9 | 27 |
| 10 | 70 |
| 11 | 56 |
| 12 | 312 |
| 13 | 180 |
| 14 | 700 |
| 15 | 1096 |
| 16 | 2131 |
| 17 | 2068 |
| 18 | 11020 |
| 19 | 7316 |
| 20 | 34008 |
| 21 | 44232 |
| 22 | 104968 |
| 23 | 95420 |
| 24 | 531296 |
| 25 | 419654 |
| 26 | 1398500 |
| 27 | 1864674 |
| 28 | 5638352 |
| 29 | 4794088 |
| 30 | 33597760 |
| 31 | 17896832 |