n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 3 |
4 | 9 |
5 | 37 |
6 | 177 |
7 | 959 |
8 | 6097 |
9 | 41641 |
10 | 325249 |
11 | 2693691 |
12 | 24807321 |
13 | 241586893 |
14 | 2558036145 |
15 | 28607094455 |
16 | 342232522657 |
17 | 4315903789009 |
18 | 57569080467073 |
19 | 807258131578995 |
20 | 11879658510739497 |
21 | 183184249105857781 |
22 | 2948163649552594737 |
23 | 49548882107764546223 |
[1,1,1,3,9,37,177,959,6097,41641,325249,2693691, 24807321,241586893,2558036145,28607094455, 342232522657,4315903789009,57569080467073, 807258131578995,11879658510739497, 183184249105857781,2948163649552594737, 49548882107764546223] |