n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 2 |
3 | 0 |
4 | 8 |
5 | 6 |
6 | 44 |
7 | 60 |
8 | 256 |
9 | 460 |
10 | 1582 |
11 | 3360 |
12 | 10324 |
13 | 24150 |
14 | 69652 |
15 | 172200 |
16 | 479728 |
17 | 1225308 |
18 | 3350972 |
19 | 8727312 |
20 | 23638174 |
21 | 62295420 |
22 | 167923252 |
23 | 445808220 |
24 | 1199180360 |
25 | 3198756132 |
26 | 8598547622 |
27 | 23009417080 |
28 | 61856381708 |
29 | 165897510350 |
[1,0,2,0,8,6,44,60,256,460,1582,3360,10324,24150, 69652,172200,479728,1225308,3350972,8727312, 23638174,62295420,167923252,445808220,1199180360, 3198756132,8598547622,23009417080,61856381708, 165897510350] |