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 | 2 |
| 3 | 3 |
| 4 | 4 |
| 5 | 20 |
| 6 | 260 |
| 7 | 740 |
| 8 | 2132 |
| 9 | 2180 |
| 10 | 5252 |
| 11 | 43364 |
| 12 | 49268 |
| 13 | 49737 |
| 14 | 80660 |
| 15 | 130052 |
| 16 | 293620 |
| 17 | 542852 |
| 18 | 661412 |
| 19 | 717027 |
| 20 | 865460 |
| 21 | 1564180 |
| 22 | 2185220 |
| 23 | 2192132 |
| 24 | 2816372 |
| 25 | 3784916 |
| 26 | 4377620 |
| 27 | 4427540 |
| 28 | 5722004 |
| 29 | 6307652 |
| 30 | 6919460 |
| 31 | 8765252 |
| 32 | 9084452 |
| 33 | 9498260 |
| 34 | 9723611 |
| 35 | 11346260 |
| 36 | 12208820 |
| 37 | 12220132 |