n | a(n) |
---|---|
1 | 1 |
2 | 4 |
3 | 18 |
4 | 669 |
5 | 170440 |
6 | 238773358 |
7 | 1436110601256 |
8 | 36028800332480074 |
9 | 3731252530927004638384 |
10 | 1584563250286480205777197264 |
11 | 2746338834266357074512496613490144 |
12 | 19358285762613388151183577985346072926384 |
13 | 553468075675608205710323628035216140349636855680 |
[1,4,18,669,170440,238773358,1436110601256, 36028800332480074,3731252530927004638384, 1584563250286480205777197264, 2746338834266357074512496613490144, 19358285762613388151183577985346072926384, 553468075675608205710323628035216140349636855680] |