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 | 199 |
| 2 | 97021 |
| 3 | 53924597 |
| 4 | 30946370401 |
| 5 | 17931360207872 |
| 6 | 10421993545062683 |
| 7 | 6063482153051471479 |
| 8 | 3528867741726076542167 |
| 9 | 2053975467997173931810469 |
| 10 | 1195557391003219846631664779 |
| 11 | 695906086927354589354168761123 |
| 12 | 405072252620898699232642344701021 |