n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 15 |
3 | 113 |
4 | 837 |
5 | 6183 |
6 | 45691 |
7 | 337607 |
8 | 2494595 |
9 | 18432707 |
10 | 136200301 |
11 | 1006391657 |
12 | 7436284415 |
13 | 54947122715 |
14 | 406007372211 |
15 | 3000011249847 |
16 | 22167251422541 |
17 | 163795064320249 |
18 | 1210290918990281 |
19 | 8942907496445513 |
20 | 66079645178783351 |
21 | 488266205223462461 |
22 | 3607826381608149807 |
[1,3,15,113,837,6183,45691,337607,2494595, 18432707,136200301,1006391657,7436284415, 54947122715,406007372211,3000011249847, 22167251422541,163795064320249,1210290918990281, 8942907496445513,66079645178783351, 488266205223462461,3607826381608149807] |