n | a(n) |
---|---|
1 | 6 |
2 | 60 |
3 | 378 |
4 | 1992 |
5 | 9518 |
6 | 42832 |
7 | 184866 |
8 | 774320 |
9 | 3169250 |
10 | 12741260 |
11 | 50482038 |
12 | 197655176 |
13 | 766180706 |
14 | 2945067020 |
15 | 11238074498 |
16 | 42614594360 |
17 | 160700082706 |
18 | 603058215404 |
19 | 2253249732126 |
20 | 8386360840584 |
21 | 31103623089422 |
22 | 114993422863904 |
23 | 423913901725634 |
[6,60,378,1992,9518,42832,184866,774320,3169250, 12741260,50482038,197655176,766180706,2945067020, 11238074498,42614594360,160700082706,603058215404, 2253249732126,8386360840584,31103623089422, 114993422863904,423913901725634] |