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) |
|---|---|
| 0 | 2 |
| 1 | 3 |
| 2 | 13 |
| 3 | 7 |
| 4 | 313 |
| 5 | 521 |
| 6 | 601 |
| 7 | 449 |
| 8 | 11489 |
| 9 | 5167 |
| 10 | 9161 |
| 11 | 5281 |
| 12 | 390001 |
| 13 | 38923 |
| 14 | 234750601 |
| 15 | 7621 |
| 16 | 29423041 |
| 17 | 41540861 |
| 18 | 6597973 |
| 19 | 213029 |
| 20 | 632133361 |
| 21 | 7603 |
| 22 | 1030330938209 |
| 23 | 42272797713043 |
| 24 | 152587500001 |
| 25 | 50150933101 |
| 26 | 83181652304609 |
| 27 | 16018507 |