n | a(n) |
---|---|
3 | 1 |
4 | 4 |
5 | 10 |
6 | 19 |
7 | 34 |
8 | 64 |
9 | 439 |
10 | 3090 |
11 | 19210 |
12 | 101422 |
13 | 504509 |
14 | 4329846 |
15 | 55414347 |
16 | 830264641 |
17 | 12430929701 |
18 | 182359363367 |
19 | 3254398810400 |
20 | 78220337119222 |
[1,4,10,19,34,64,439,3090,19210,101422,504509, 4329846,55414347,830264641,12430929701, 182359363367,3254398810400,78220337119222] |