n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 5 |
4 | 20 |
5 | 182 |
6 | 6552 |
7 | 1517473 |
8 | 4654013540 |
9 | 520378069012098 |
10 | 10766981089503125653501 |
11 | 448728931430680787386854758969563 |
12 | 1010943666488949958707946804366787268947495194377 |
[1,1,2,5,20,182,6552,1517473,4654013540, 520378069012098,10766981089503125653501, 448728931430680787386854758969563, 1010943666488949958707946804366787268947495194377] |