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 | 1 |
| 2 | 10 |
| 3 | 245 |
| 4 | 53205 |
| 5 | 86501661 |
| 6 | 401048016071 |
| 7 | 2593006992632304 |
| 8 | 17479995774348158728 |
| 9 | 111234470124947445670723 |
| 10 | 650082529279857925866297172 |
| 11 | 3477285812292457629346580658452 |