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 | 15 |
| 2 | 867 |
| 3 | 43941 |
| 4 | 1941904 |
| 5 | 76453838 |
| 6 | 2740448352 |
| 7 | 91020540767 |
| 8 | 2837847226191 |
| 9 | 83919692408722 |
| 10 | 2372632276864454 |
| 11 | 64552746518391559 |
| 12 | 1698928155067259979 |
| 13 | 43440043738459660061 |
| 14 | 1082941619670703392975 |