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 | 27 |
| 2 | 1465 |
| 3 | 92041 |
| 4 | 6554833 |
| 5 | 504813055 |
| 6 | 40947676475 |
| 7 | 3442465670223 |
| 8 | 296935715374179 |
| 9 | 26108021958592999 |
| 10 | 2329702677873323273 |
| 11 | 210338403560373373799 |
| 12 | 19172323465486902000641 |
| 13 | 1761408925012566646647345 |
| 14 | 162904914369466264400189781 |
| 15 | 15152171905761023446344720303 |