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 | 11 |
| 2 | 211 |
| 3 | 5211 |
| 4 | 145211 |
| 5 | 4345211 |
| 6 | 136345211 |
| 7 | 4426345211 |
| 8 | 147426345211 |
| 9 | 5009426345211 |
| 10 | 172969426345211 |
| 11 | 6051569426345211 |
| 12 | 214063569426345211 |
| 13 | 7643063569426345211 |
| 14 | 275087063569426345211 |
| 15 | 9969932063569426345211 |