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 | 5 |
| 2 | 85 |
| 3 | 1595 |
| 4 | 33055 |
| 5 | 723701 |
| 6 | 16429435 |
| 7 | 382643525 |
| 8 | 9082868245 |
| 9 | 218790563255 |
| 10 | 5332206228085 |
| 11 | 131194789234955 |
| 12 | 3253536973286245 |
| 13 | 81224561099580155 |
| 14 | 2039348104811147845 |
| 15 | 51455631680563483835 |
| 16 | 1303889832725451598495 |