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 | 9 |
| 2 | 171 |
| 3 | 252 |
| 4 | 333 |
| 5 | 414 |
| 6 | 10701 |
| 7 | 11511 |
| 8 | 12321 |
| 9 | 13131 |
| 10 | 20502 |
| 11 | 21312 |
| 12 | 22122 |
| 13 | 30303 |
| 14 | 31113 |
| 15 | 40104 |
| 16 | 1007001 |
| 17 | 1015101 |
| 18 | 1023201 |
| 19 | 1031301 |
| 20 | 1105011 |
| 21 | 1113111 |
| 22 | 1121211 |
| 23 | 1203021 |
| 24 | 1211121 |
| 25 | 1301031 |
| 26 | 2005002 |
| 27 | 2013102 |
| 28 | 2021202 |
| 29 | 2103012 |
| 30 | 2111112 |
| 31 | 2201022 |
| 32 | 3003003 |
| 33 | 3011103 |