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 | 0 |
| 1 | 10 |
| 2 | 108 |
| 3 | 1126 |
| 4 | 11506 |
| 5 | 116166 |
| 6 | 1168586 |
| 7 | 11749134 |
| 8 | 118127408 |
| 9 | 1187692422 |
| 10 | 11941503498 |
| 11 | 120064335342 |
| 12 | 1207171430452 |
| 13 | 12137349489598 |
| 14 | 122033415224922 |
| 15 | 1226969238084836 |
| 16 | 12336404001299200 |
| 17 | 124034783402890620 |
| 18 | 1247091736942594618 |
| 19 | 12538723071673581562 |