n | a(n) |
---|---|
1 | 2 |
2 | 4 |
3 | 19 |
4 | 181 |
5 | 2701 |
6 | 56701 |
7 | 1587601 |
8 | 57153601 |
9 | 2571912001 |
10 | 141455160001 |
11 | 9336040560001 |
12 | 728211163680001 |
13 | 66267215894880001 |
14 | 6958057668962400001 |
15 | 834966920275488000001 |
16 | 113555501157466368000001 |
[2,4,19,181,2701,56701,1587601,57153601, 2571912001,141455160001,9336040560001, 728211163680001,66267215894880001, 6958057668962400001,834966920275488000001, 113555501157466368000001] |