n | a(n) |
---|---|
0 | 2 |
1 | 6 |
2 | 54 |
3 | 564 |
4 | 6390 |
5 | 76356 |
6 | 948276 |
7 | 12132504 |
8 | 158984694 |
9 | 2124923460 |
10 | 28877309604 |
11 | 398046897144 |
12 | 5554209125556 |
13 | 78328566695736 |
14 | 1114923122685720 |
15 | 15999482238880464 |
16 | 231253045986317814 |
17 | 3363838379489630916 |
[2,6,54,564,6390,76356,948276,12132504,158984694, 2124923460,28877309604,398046897144,5554209125556, 78328566695736,1114923122685720,15999482238880464, 231253045986317814,3363838379489630916] |