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 | 2 |
| 3 | 6 |
| 4 | 3 |
| 5 | 15 |
| 6 | 5 |
| 7 | 35 |
| 8 | 35 |
| 9 | 105 |
| 10 | 7 |
| 11 | 77 |
| 12 | 77 |
| 13 | 1001 |
| 14 | 143 |
| 15 | 429 |
| 16 | 2145 |
| 17 | 36465 |
| 18 | 12155 |
| 19 | 230945 |
| 20 | 46189 |
| 21 | 323323 |
| 22 | 29393 |
| 23 | 676039 |
| 24 | 676039 |
| 25 | 16900975 |
| 26 | 1300075 |
| 27 | 2340135 |
| 28 | 334305 |
| 29 | 9694845 |
| 30 | 215441 |
| 31 | 6678671 |
| 32 | 100180065 |
| 33 | 3305942145 |
| 34 | 64822395 |
| 35 | 2268783825 |