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) |
|---|---|
| 1 | 11 |
| 2 | 211 |
| 3 | 3217 |
| 4 | 432121 |
| 5 | 543217 |
| 6 | 65432117 |
| 7 | 76543217 |
| 8 | 876543211 |
| 9 | 9876543211 |
| 10 | 1098765432101 |
| 11 | 11109876543211 |
| 12 | 12111098765432101 |
| 13 | 1312111098765432139 |
| 14 | 141312111098765432113 |
| 15 | 15141312111098765432173 |