n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 1 |
5 | 3 |
6 | 11 |
7 | 39 |
8 | 157 |
9 | 708 |
10 | 3543 |
11 | 19490 |
12 | 116943 |
13 | 760134 |
14 | 5320940 |
15 | 39907054 |
16 | 319256437 |
17 | 2713679718 |
18 | 24423117468 |
19 | 232019615953 |
20 | 2320196159531 |
21 | 24362059675078 |
22 | 267982656425859 |
23 | 3081800548897382 |
24 | 36981606586768593 |
[0,0,0,1,3,11,39,157,708,3543,19490,116943,760134, 5320940,39907054,319256437,2713679718,24423117468, 232019615953,2320196159531,24362059675078, 267982656425859,3081800548897382, 36981606586768593] |