n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 0 |
6 | 0 |
7 | 0 |
8 | 0 |
9 | 1 |
10 | 8 |
11 | 43 |
12 | 180 |
13 | 657 |
14 | 2175 |
15 | 6746 |
16 | 19923 |
17 | 56766 |
18 | 157273 |
19 | 426372 |
20 | 1135812 |
21 | 2983032 |
22 | 7742322 |
23 | 19896231 |
24 | 50695676 |
25 | 128224079 |
26 | 322221166 |
27 | 805088502 |
28 | 2001225122 |
29 | 4951394924 |
30 | 12198848726 |
31 | 29938095480 |
32 | 73210846964 |
[0,0,0,0,0,0,0,0,0,1,8,43,180,657,2175,6746,19923, 56766,157273,426372,1135812,2983032,7742322, 19896231,50695676,128224079,322221166,805088502, 2001225122,4951394924,12198848726,29938095480, 73210846964] |