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 | 4 |
| 2 | 41 |
| 3 | 4111 |
| 4 | 4113 |
| 5 | 411231 |
| 6 | 4112213111 |
| 7 | 411222113113 |
| 8 | 41122312311231 |
| 9 | 4112223111213112213111 |
| 10 | 41122331132111311222113113 |
| 11 | 411222321231211331122312311231 |