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 | 3 |
| 2 | 11 |
| 3 | 12 |
| 4 | 36 |
| 5 | 116 |
| 6 | 132 |
| 7 | 1163 |
| 8 | 1332 |
| 9 | 13332 |
| 10 | 133332 |
| 11 | 1333332 |
| 12 | 3941747 |
| 13 | 11737707 |
| 14 | 13333332 |
| 15 | 133333332 |
| 16 | 1333333332 |
| 17 | 13333333332 |
| 18 | 133333333332 |
| 19 | 416381478667 |
| 20 | 1254414499811 |
| 21 | 1333333333332 |
| 22 | 4187521168132 |
| 23 | 11635005525283 |