n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 8 |
3 | 63 |
4 | 496 |
5 | 3905 |
6 | 30744 |
7 | 242047 |
8 | 1905632 |
9 | 15003009 |
10 | 118118440 |
11 | 929944511 |
12 | 7321437648 |
13 | 57641556673 |
14 | 453811015736 |
15 | 3572846569215 |
16 | 28128961537984 |
17 | 221458845734657 |
18 | 1743541804339272 |
19 | 13726875588979519 |
20 | 108071462907496880 |
21 | 850844827670995521 |
22 | 6698687158460467288 |
[0,1,8,63,496,3905,30744,242047,1905632,15003009, 118118440,929944511,7321437648,57641556673, 453811015736,3572846569215,28128961537984, 221458845734657,1743541804339272, 13726875588979519,108071462907496880, 850844827670995521,6698687158460467288] |