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 | 1259 |
| 3 | 51241 |
| 4 | 81749 |
| 5 | 230149 |
| 6 | 245621 |
| 7 | 253567 |
| 8 | 269879 |
| 9 | 286801 |
| 10 | 331301 |
| 11 | 482731 |
| 12 | 540041 |
| 13 | 551917 |
| 14 | 564013 |
| 15 | 625943 |
| 16 | 638669 |
| 17 | 746777 |
| 18 | 975427 |
| 19 | 1093129 |
| 20 | 1145537 |
| 21 | 1181149 |
| 22 | 1272679 |
| 23 | 1528187 |
| 24 | 1569479 |
| 25 | 1675679 |
| 26 | 1741517 |
| 27 | 1970867 |
| 28 | 2066951 |