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 | 2 |
| 2 | 29 |
| 3 | 229 |
| 4 | 929 |
| 5 | 2029 |
| 6 | 2099 |
| 7 | 2909 |
| 8 | 2999 |
| 9 | 9029 |
| 10 | 9209 |
| 11 | 9929 |
| 12 | 20029 |
| 13 | 20929 |
| 14 | 22229 |
| 15 | 29009 |
| 16 | 29209 |
| 17 | 92009 |
| 18 | 99929 |
| 19 | 200009 |
| 20 | 200029 |
| 21 | 200909 |
| 22 | 200929 |
| 23 | 202099 |
| 24 | 202999 |
| 25 | 209029 |
| 26 | 209299 |
| 27 | 209929 |
| 28 | 220009 |
| 29 | 222029 |
| 30 | 290209 |
| 31 | 290999 |
| 32 | 292909 |
| 33 | 299029 |
| 34 | 299099 |
| 35 | 299909 |
| 36 | 900929 |