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 | 3 |
| 2 | 36 |
| 3 | 369 |
| 4 | 3702 |
| 5 | 37035 |
| 6 | 370368 |
| 7 | 3703701 |
| 8 | 37037034 |
| 9 | 370370367 |
| 10 | 3703703700 |
| 11 | 37037037033 |
| 12 | 370370370366 |
| 13 | 3703703703699 |
| 14 | 37037037037032 |
| 15 | 370370370370365 |
| 16 | 3703703703703698 |
| 17 | 37037037037037031 |
| 18 | 370370370370370364 |
| 19 | 3703703703703703697 |
| 20 | 37037037037037037030 |
| 21 | 370370370370370370363 |