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 | 0 |
| 2 | 1 |
| 3 | 1331 |
| 4 | 1030301 |
| 5 | 1003003001 |
| 6 | 1000300030001 |
| 7 | 1000030000300001 |
| 8 | 1000003000003000001 |
| 9 | 1000000300000030000001 |
| 10 | 1000000030000000300000001 |
| 11 | 1000000003000000003000000001 |
| 12 | 1000000000300000000030000000001 |
| 13 | 1000000000030000000000300000000001 |
| 14 | 1000000000003000000000003000000000001 |