n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 12 |
4 | 138 |
5 | 2652 |
6 | 78106 |
7 | 3256404 |
8 | 182463296 |
9 | 13219108288 |
10 | 1202200963522 |
11 | 134070195402644 |
12 | 17989233145940910 |
13 | 2858771262108762492 |
14 | 530972857546678902490 |
15 | 113965195745030648131036 |
16 | 27991663753030583516229824 |
17 | 7800669355870672032684666900 |
18 | 2448021231611414334414904013956 |
[1,1,2,12,138,2652,78106,3256404,182463296, 13219108288,1202200963522,134070195402644, 17989233145940910,2858771262108762492, 530972857546678902490,113965195745030648131036, 27991663753030583516229824, 7800669355870672032684666900, 2448021231611414334414904013956] |