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) |
|---|---|
| 0 | 0 |
| 1 | 10 |
| 2 | 100 |
| 3 | 110 |
| 4 | 200 |
| 5 | 210 |
| 6 | 1000 |
| 7 | 1010 |
| 8 | 1100 |
| 9 | 1110 |
| 10 | 1200 |
| 11 | 1210 |
| 12 | 2000 |
| 13 | 2010 |
| 14 | 2100 |
| 15 | 2110 |
| 16 | 2200 |
| 17 | 2210 |
| 18 | 3000 |
| 19 | 3010 |
| 20 | 3100 |
| 21 | 3110 |
| 22 | 3200 |
| 23 | 3210 |
| 24 | 10000 |
| 25 | 10010 |
| 26 | 10100 |
| 27 | 10110 |
| 28 | 10200 |
| 29 | 10210 |
| 30 | 11000 |
| 31 | 11010 |
| 32 | 11100 |
| 33 | 11110 |
| 34 | 11200 |
| 35 | 11210 |
| 36 | 12000 |
| 37 | 12010 |
| 38 | 12100 |
| 39 | 12110 |
| 40 | 12200 |