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) |
|---|---|
| 2 | 341 |
| 3 | 286 |
| 4 | 11305 |
| 5 | 2203201 |
| 6 | 12306385 |
| 7 | 9073150801 |
| 8 | 3958035081 |
| 9 | 2539184851126 |
| 10 | 152064312120721 |
| 11 | 10963650080564545 |
| 12 | 378958695265110961 |
| 13 | 1035551157050957605345 |
| 14 | 57044715596229144811105 |
| 15 | 6149883077429715389052001 |
| 16 | 426634466310819456228926101 |
| 17 | 166532358913107245358261399361 |