n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 7 |
3 | 55 |
4 | 571 |
5 | 7471 |
6 | 117307 |
7 | 2148175 |
8 | 44958571 |
9 | 1058555791 |
10 | 27693129307 |
11 | 796934764495 |
12 | 25018548004171 |
13 | 850870651904911 |
14 | 31163746960955707 |
15 | 1222922731101304015 |
16 | 51189052318085027371 |
17 | 2276586205163067346831 |
18 | 107204914362429152404507 |
[1,1,7,55,571,7471,117307,2148175,44958571, 1058555791,27693129307,796934764495, 25018548004171,850870651904911,31163746960955707, 1222922731101304015,51189052318085027371, 2276586205163067346831,107204914362429152404507] |