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 | 119139133 |
| 2 | 133119139 |
| 3 | 139133119 |
| 4 | 191391331 |
| 5 | 311913913 |
| 6 | 331191391 |
| 7 | 913311913 |
| 8 | 913913311 |
| 9 | 1013517313 |
| 10 | 1033939939 |
| 11 | 1039191919 |
| 12 | 1112795317 |
| 13 | 1113194339 |
| 14 | 1117923797 |
| 15 | 1127953171 |
| 16 | 1131943391 |
| 17 | 1139937913 |
| 18 | 1173917197 |
| 19 | 1179237971 |
| 20 | 1279531711 |
| 21 | 1310135173 |
| 22 | 1311399379 |