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 | 198765432101 |
| 2 | 498765432101 |
| 3 | 498765432107 |
| 4 | 798765432103 |
| 5 | 798765432109 |
| 6 | 987654321007 |
| 7 | 987654321029 |
| 8 | 987654321047 |
| 9 | 987654321061 |
| 10 | 987654321089 |
| 11 | 987654321097 |
| 12 | 1098765432101 |
| 13 | 1398765432101 |
| 14 | 1498765432103 |
| 15 | 1898765432107 |
| 16 | 1987654321019 |
| 17 | 1987654321069 |
| 18 | 2898765432107 |
| 19 | 2987654321017 |
| 20 | 2987654321039 |