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 | 8 |
| 2 | 81 |
| 3 | 872 |
| 4 | 9669 |
| 5 | 109128 |
| 6 | 1246419 |
| 7 | 14359304 |
| 8 | 166512285 |
| 9 | 1940885504 |
| 10 | 22717923586 |
| 11 | 266833238328 |
| 12 | 3143237113479 |
| 13 | 37119019790016 |
| 14 | 439290932937672 |
| 15 | 5208668386199112 |
| 16 | 61861932606093901 |
| 17 | 735804601177846968 |
| 18 | 8763478151940329859 |
| 19 | 104498114621004830160 |
| 20 | 1247410783999193335434 |