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 | 902 |
| 2 | 1000402 |
| 3 | 4000102 |
| 4 | 5000102 |
| 5 | 5000702 |
| 6 | 6000902 |
| 7 | 7000002 |
| 8 | 104000102 |
| 9 | 105000102 |
| 10 | 105000902 |
| 11 | 106000602 |
| 12 | 109000002 |
| 13 | 401000002 |
| 14 | 405000402 |
| 15 | 405000702 |
| 16 | 405000902 |
| 17 | 406000602 |
| 18 | 407000502 |
| 19 | 500000102 |
| 20 | 500000402 |