n | a(n) |
---|---|
-1 | 1 |
0 | 2 |
1 | 3 |
2 | 6 |
3 | 22 |
4 | 402 |
5 | 1228158 |
6 | 400507806843728 |
7 | 527471432057653004017274030725792 |
8 | 11218076601767519586965281984173341005925142853855481024470471657123840 |
[1,2,3,6,22,402,1228158,400507806843728, 527471432057653004017274030725792, 11218076601767519586965281984173341005925142853855\ 481024470471657123840] |