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 | 2 |
| 3 | 3 |
| 4 | 4 |
| 5 | 5 |
| 6 | 6 |
| 7 | 9 |
| 8 | 10 |
| 9 | 11 |
| 10 | 19 |
| 11 | 20 |
| 12 | 30 |
| 13 | 40 |
| 14 | 50 |
| 15 | 60 |
| 16 | 90 |
| 17 | 100 |
| 18 | 110 |
| 19 | 190 |
| 20 | 200 |
| 21 | 300 |
| 22 | 400 |
| 23 | 500 |
| 24 | 600 |
| 25 | 900 |
| 26 | 1000 |
| 27 | 1100 |
| 28 | 1900 |
| 29 | 2000 |
| 30 | 3000 |