n | a(n) |
---|---|
1 | 1 |
2 | 6 |
3 | 20 |
4 | 67 |
5 | 393 |
6 | 4133 |
7 | 86487 |
8 | 3590263 |
9 | 285034170 |
10 | 43174729552 |
11 | 12383193287684 |
12 | 6712873423988949 |
13 | 6871475875643572553 |
14 | 13272675681120501977922 |
15 | 48367944991570243925176462 |
16 | 332490278773637201581189154380 |
[1,6,20,67,393,4133,86487,3590263,285034170, 43174729552,12383193287684,6712873423988949, 6871475875643572553,13272675681120501977922, 48367944991570243925176462, 332490278773637201581189154380] |