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 | 32 |
| 2 | 212 |
| 3 | 1100 |
| 4 | 6700 |
| 5 | 41252 |
| 6 | 260276 |
| 7 | 1663260 |
| 8 | 10741356 |
| 9 | 69920372 |
| 10 | 458065232 |
| 11 | 3016606328 |
| 12 | 19952674708 |
| 13 | 132459700444 |
| 14 | 882141536432 |
| 15 | 5890902558440 |
| 16 | 39433549800556 |
| 17 | 264525710537012 |
| 18 | 1777811473603544 |
| 19 | 11968319215904376 |