n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 7 |
4 | 21 |
5 | 81 |
6 | 793 |
7 | 4929 |
8 | 33029 |
9 | 388537 |
10 | 3751311 |
11 | 37585989 |
12 | 523395777 |
13 | 6814401361 |
14 | 90789460427 |
15 | 1486639926417 |
16 | 24213653736389 |
17 | 403184436319401 |
18 | 7665459211898263 |
19 | 149067938821523349 |
20 | 2971265450045056871 |
21 | 64800464138121854877 |
22 | 1460876941168812354947 |
[1,1,1,7,21,81,793,4929,33029,388537,3751311, 37585989,523395777,6814401361,90789460427, 1486639926417,24213653736389,403184436319401, 7665459211898263,149067938821523349, 2971265450045056871,64800464138121854877, 1460876941168812354947] |