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 | 7 |
| 2 | 47 |
| 3 | 271 |
| 4 | 311 |
| 5 | 503 |
| 6 | 6367 |
| 7 | 37223 |
| 8 | 42487 |
| 9 | 66463 |
| 10 | 183527 |
| 11 | 259271 |
| 12 | 307919 |
| 13 | 471007 |
| 14 | 1070567 |
| 15 | 1801223 |
| 16 | 5903687 |
| 17 | 6885743 |
| 18 | 16936247 |
| 19 | 22413319 |
| 20 | 38820263 |
| 21 | 63977327 |
| 22 | 84164447 |
| 23 | 147452759 |
| 24 | 150334567 |
| 25 | 239422639 |
| 26 | 300412031 |
| 27 | 387154951 |
| 28 | 473153959 |
| 29 | 539526191 |
| 30 | 760400783 |
| 31 | 788128039 |