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 | 0 |
| 2 | 1 |
| 3 | 1000 |
| 4 | 1331 |
| 5 | 1000000 |
| 6 | 1030301 |
| 7 | 1331000 |
| 8 | 1000000000 |
| 9 | 1003003001 |
| 10 | 1030301000 |
| 11 | 1331000000 |
| 12 | 1000000000000 |
| 13 | 1000300030001 |
| 14 | 1003003001000 |
| 15 | 1030301000000 |
| 16 | 1331000000000 |
| 17 | 1000000000000000 |
| 18 | 1000030000300001 |
| 19 | 1000300030001000 |
| 20 | 1003003001000000 |
| 21 | 1030301000000000 |
| 22 | 1331000000000000 |