n | a(n) |
---|---|
1 | 1 |
2 | 0 |
3 | 1 |
4 | 3 |
5 | 19 |
6 | 135 |
7 | 1204 |
8 | 12537 |
9 | 150556 |
10 | 2043930 |
11 | 30969211 |
12 | 517973148 |
13 | 9478800604 |
14 | 188381470095 |
15 | 4040440921699 |
16 | 93020386382742 |
17 | 2287969523647171 |
18 | 59877222907995675 |
19 | 1661259526266784171 |
20 | 48705364034046758493 |
21 | 1504614657169716311674 |
22 | 48848750173492332588525 |
[1,0,1,3,19,135,1204,12537,150556,2043930, 30969211,517973148,9478800604,188381470095, 4040440921699,93020386382742,2287969523647171, 59877222907995675,1661259526266784171, 48705364034046758493,1504614657169716311674, 48848750173492332588525] |