n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 11 |
3 | 25 |
4 | 274 |
5 | 294 |
6 | 13068 |
7 | 13698 |
8 | 114064 |
9 | 1062864 |
10 | 120543840 |
11 | 123870240 |
12 | 19802759040 |
13 | 20247546240 |
14 | 289277533440 |
15 | 4420892649600 |
16 | 1223405590579200 |
17 | 1243166003251200 |
18 | 431565146817638400 |
19 | 437647401838080000 |
[1,3,11,25,274,294,13068,13698,114064,1062864, 120543840,123870240,19802759040,20247546240, 289277533440,4420892649600,1223405590579200, 1243166003251200,431565146817638400, 437647401838080000] |