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 | 0 |
| 2 | 2 |
| 3 | 176 |
| 4 | 17222 |
| 5 | 1687556 |
| 6 | 165363242 |
| 7 | 16203910136 |
| 8 | 1587817830062 |
| 9 | 155589943435916 |
| 10 | 15246226638889682 |
| 11 | 1493974620667752896 |
| 12 | 146394266598800894102 |
| 13 | 14345144152061819869076 |
| 14 | 1405677732635459546275322 |
| 15 | 137742072654122973715112456 |
| 16 | 13497317442371415964534745342 |