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 | 11 |
| 2 | 1021 |
| 3 | 1201 |
| 4 | 2011 |
| 5 | 3001 |
| 6 | 10103 |
| 7 | 10211 |
| 8 | 10301 |
| 9 | 11003 |
| 10 | 12011 |
| 11 | 12101 |
| 12 | 13001 |
| 13 | 20021 |
| 14 | 20201 |
| 15 | 21011 |
| 16 | 21101 |
| 17 | 30011 |
| 18 | 1000033 |
| 19 | 1000213 |
| 20 | 1000231 |
| 21 | 1000303 |
| 22 | 1001023 |
| 23 | 1001041 |
| 24 | 1001311 |
| 25 | 1001401 |
| 26 | 1002121 |
| 27 | 1003003 |
| 28 | 1003111 |
| 29 | 1003201 |
| 30 | 1010131 |