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 | 82 |
| 3 | 2107 |
| 4 | 29332 |
| 5 | 274357 |
| 6 | 1930726 |
| 7 | 10948735 |
| 8 | 52357960 |
| 9 | 217994860 |
| 10 | 808970960 |
| 11 | 2723733524 |
| 12 | 8436372248 |
| 13 | 24304813148 |
| 14 | 65712993248 |
| 15 | 167965846148 |
| 16 | 408373664744 |
| 17 | 949291256585 |
| 18 | 2119095737210 |
| 19 | 4559798912835 |
| 20 | 9488531918460 |
| 21 | 19148848609485 |
| 22 | 37571357310510 |