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 | 1 |
| 1 | 17 |
| 2 | 1377 |
| 3 | 111537 |
| 4 | 9034497 |
| 5 | 731794257 |
| 6 | 59275334817 |
| 7 | 4801302120177 |
| 8 | 388905471734337 |
| 9 | 31501343210481297 |
| 10 | 2551608800048985057 |
| 11 | 206680312803967789617 |
| 12 | 16741105337121390958977 |
| 13 | 1356029532306832667677137 |
| 14 | 109838392116853446081848097 |
| 15 | 8896909761465129132629695857 |