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 | 31 |
| 3 | 1761 |
| 4 | 75451 |
| 5 | 1598395 |
| 6 | 23327655 |
| 7 | 275846173 |
| 8 | 2895194179 |
| 9 | 28388585391 |
| 10 | 267809160367 |
| 11 | 2472279047473 |
| 12 | 22552186971627 |
| 13 | 204400652073763 |
| 14 | 1846262280059767 |
| 15 | 16646854130219781 |
| 16 | 149959684159252819 |