n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 4 |
3 | 14 |
4 | 140 |
5 | 4964 |
6 | 808870 |
7 | 726210606 |
8 | 4161522164020 |
9 | 170403742275382924 |
10 | 54674613696351170731038 |
11 | 148019646825727958873435181692 |
12 | 3596203368022579371689526442266893534 |
[1,2,4,14,140,4964,808870,726210606,4161522164020, 170403742275382924,54674613696351170731038, 148019646825727958873435181692, 3596203368022579371689526442266893534] |