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 | 300 |
| 3 | 3003 |
| 4 | 23220 |
| 5 | 203203 |
| 6 | 322003 |
| 7 | 32020003 |
| 8 | 333220020 |
| 9 | 3200200003 |
| 10 | 320002000003 |
| 11 | 2330203323003 |
| 12 | 32000020000003 |
| 13 | 332003222232003 |
| 14 | 2203322302033203 |
| 15 | 3200000200000003 |
| 16 | 320000002000000003 |
| 17 | 32000000020000000003 |
| 18 | 233200332233023303203 |
| 19 | 3200000000200000000003 |