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 | 51 |
| 3 | 531 |
| 4 | 2571 |
| 5 | 15703 |
| 6 | 90271 |
| 7 | 102053 |
| 8 | 530102 |
| 9 | 4550102 |
| 10 | 4570102 |
| 11 | 4580102 |
| 12 | 22900501 |
| 13 | 134003006 |
| 14 | 1002003005 |
| 15 | 5001002003 |
| 16 | 5003001002 |
| 17 | 30005001002 |
| 18 | 30005002001 |
| 19 | 200030005001 |
| 20 | 1000200030005 |
| 21 | 5000100020003 |
| 22 | 5000300010002 |