n | a(n) |
---|---|
1 | 0 |
2 | 2 |
3 | 15 |
4 | 148 |
5 | 1785 |
6 | 26106 |
7 | 449701 |
8 | 8927192 |
9 | 200847681 |
10 | 5053782070 |
11 | 140679853941 |
12 | 4293235236324 |
13 | 142553671807729 |
14 | 5116962926162738 |
15 | 197459475792232725 |
16 | 8152354312656732976 |
17 | 358585728464893234305 |
18 | 16741214317684425260142 |
19 | 826842457727306803110997 |
20 | 43073414675338753123113980 |
[0,2,15,148,1785,26106,449701,8927192,200847681, 5053782070,140679853941,4293235236324, 142553671807729,5116962926162738, 197459475792232725,8152354312656732976, 358585728464893234305,16741214317684425260142, 826842457727306803110997, 43073414675338753123113980] |