n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 13 |
4 | 115 |
5 | 851 |
6 | 13431 |
7 | 144516 |
8 | 2782571 |
9 | 47046307 |
10 | 1107742273 |
11 | 19263747713 |
12 | 657152726011 |
13 | 13657313316986 |
14 | 451605697223110 |
15 | 13377063396461138 |
16 | 531234399267707419 |
17 | 14563460779785318719 |
18 | 721703507708044677945 |
19 | 22141894282020163910406 |
20 | 1123287408943765640907425 |
[1,1,3,13,115,851,13431,144516,2782571,47046307, 1107742273,19263747713,657152726011, 13657313316986,451605697223110,13377063396461138, 531234399267707419,14563460779785318719, 721703507708044677945,22141894282020163910406, 1123287408943765640907425] |