n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 0 |
6 | 0 |
7 | 1 |
8 | 6 |
9 | 26 |
10 | 94 |
11 | 302 |
12 | 900 |
13 | 2546 |
14 | 6931 |
15 | 18341 |
16 | 47474 |
17 | 120750 |
18 | 302741 |
19 | 750050 |
20 | 1839421 |
21 | 4471759 |
22 | 10787891 |
23 | 25849612 |
24 | 61564934 |
25 | 145828769 |
26 | 343713516 |
27 | 806462038 |
28 | 1884353462 |
29 | 4386038531 |
30 | 10172642984 |
31 | 23515472829 |
32 | 54190799650 |
[0,0,0,0,0,0,0,1,6,26,94,302,900,2546,6931,18341, 47474,120750,302741,750050,1839421,4471759, 10787891,25849612,61564934,145828769,343713516, 806462038,1884353462,4386038531,10172642984, 23515472829,54190799650] |