n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 27 |
3 | 301 |
4 | 3780 |
5 | 51030 |
6 | 723170 |
7 | 10611594 |
8 | 159845946 |
9 | 2457515235 |
10 | 38406398016 |
11 | 608330707740 |
12 | 9744053489754 |
13 | 157564967282709 |
14 | 2568706865998272 |
15 | 42173100349112852 |
16 | 696692754641035014 |
17 | 11572241797209975966 |
18 | 193153224033985241217 |
[1,3,27,301,3780,51030,723170,10611594,159845946, 2457515235,38406398016,608330707740,9744053489754, 157564967282709,2568706865998272, 42173100349112852,696692754641035014, 11572241797209975966,193153224033985241217] |