n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 3 |
3 | 9 |
4 | 46 |
5 | 227 |
6 | 1201 |
7 | 6551 |
8 | 36712 |
9 | 209963 |
10 | 1220752 |
11 | 7193888 |
12 | 42873220 |
13 | 257957352 |
14 | 1564809168 |
15 | 9559946496 |
16 | 58768808463 |
17 | 363261736872 |
18 | 2256369305793 |
19 | 14076552984507 |
20 | 88163556913188 |
21 | 554148894304557 |
22 | 3494365949734563 |
[1,0,3,9,46,227,1201,6551,36712,209963,1220752, 7193888,42873220,257957352,1564809168,9559946496, 58768808463,363261736872,2256369305793, 14076552984507,88163556913188,554148894304557, 3494365949734563] |