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) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 0 |
| 3 | 1 |
| 4 | 1 |
| 5 | 4 |
| 6 | 3 |
| 7 | 14 |
| 8 | 13 |
| 9 | 50 |
| 10 | 47 |
| 11 | 202 |
| 12 | 197 |
| 13 | 875 |
| 14 | 861 |
| 15 | 4105 |
| 16 | 4096 |
| 17 | 20647 |
| 18 | 20593 |
| 19 | 109298 |
| 20 | 109246 |
| 21 | 601476 |
| 22 | 601289 |
| 23 | 3403126 |
| 24 | 3402911 |
| 25 | 19628059 |
| 26 | 19627188 |
| 27 | 114700263 |
| 28 | 114699438 |
| 29 | 676207627 |
| 30 | 676203467 |
| 31 | 4010090462 |
| 32 | 4010086352 |
| 33 | 23874361996 |
| 34 | 23874341552 |
| 35 | 142508723632 |