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 | 181 |
| 2 | 757 |
| 3 | 919 |
| 4 | 12421 |
| 5 | 16561 |
| 6 | 18181 |
| 7 | 19891 |
| 8 | 30403 |
| 9 | 34543 |
| 10 | 35353 |
| 11 | 70507 |
| 12 | 71317 |
| 13 | 77977 |
| 14 | 78787 |
| 15 | 95959 |
| 16 | 96769 |
| 17 | 97579 |
| 18 | 98389 |
| 19 | 1008001 |
| 20 | 1065601 |
| 21 | 1114111 |
| 22 | 1163611 |
| 23 | 1196911 |
| 24 | 1212121 |
| 25 | 1245421 |
| 26 | 1253521 |
| 27 | 1278721 |
| 28 | 1286821 |
| 29 | 1327231 |
| 30 | 1335331 |
| 31 | 1343431 |
| 32 | 1409041 |
| 33 | 1490941 |