n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 7 |
4 | 38 |
5 | 279 |
6 | 2535 |
7 | 27106 |
8 | 330998 |
9 | 4526827 |
10 | 68402684 |
11 | 1130591607 |
12 | 20282026273 |
13 | 392427087780 |
14 | 8146462590683 |
15 | 180629845193090 |
16 | 4261044215912232 |
17 | 106571080784076813 |
18 | 2817142524095598771 |
[1,1,2,7,38,279,2535,27106,330998,4526827, 68402684,1130591607,20282026273,392427087780, 8146462590683,180629845193090,4261044215912232, 106571080784076813,2817142524095598771] |