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 | 6 |
| 2 | 107 |
| 3 | 3186 |
| 4 | 132849 |
| 5 | 7122870 |
| 6 | 466788195 |
| 7 | 36153055890 |
| 8 | 3230902408545 |
| 9 | 327238250094630 |
| 10 | 37043457415695675 |
| 11 | 4634751809368192050 |
| 12 | 635113491345511326225 |
| 13 | 94599619441277679278550 |