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 | 919 |
| 2 | 9119 |
| 3 | 90109 |
| 4 | 91019 |
| 5 | 91119 |
| 6 | 91219 |
| 7 | 91319 |
| 8 | 91419 |
| 9 | 91519 |
| 10 | 91619 |
| 11 | 91719 |
| 12 | 91819 |
| 13 | 91919 |
| 14 | 92129 |
| 15 | 93139 |
| 16 | 94149 |
| 17 | 95159 |
| 18 | 96169 |
| 19 | 97179 |
| 20 | 98189 |
| 21 | 99199 |
| 22 | 901109 |
| 23 | 910019 |
| 24 | 911119 |
| 25 | 912219 |
| 26 | 913319 |
| 27 | 914419 |
| 28 | 915519 |
| 29 | 916619 |
| 30 | 917719 |
| 31 | 918819 |
| 32 | 919919 |
| 33 | 921129 |