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 | 1 |
| 2 | 127 |
| 3 | 14197 |
| 4 | 1527655 |
| 5 | 154708741 |
| 6 | 14581420567 |
| 7 | 1282928605477 |
| 8 | 106281575400295 |
| 9 | 8370106554738181 |
| 10 | 632240233746846007 |
| 11 | 46159332156459328357 |
| 12 | 3278558540783856976135 |
| 13 | 227767526682511220042821 |
| 14 | 15545657368091391819871447 |
| 15 | 1046175606578621216182684837 |