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 | 1 |
| 2 | 210 |
| 3 | 102220 |
| 4 | 12221001 |
| 5 | 2202111220 |
| 6 | 1020020120010 |
| 7 | 112101212202101 |
| 8 | 20002221022010100 |
| 9 | 2112211110001000200 |
| 10 | 1001100202012200011001 |
| 11 | 10221012122122021102212210 |
| 12 | 120212211002121222001110211020 |
| 13 | 2100201122222221220212010020220201 |