n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 1 |
3 | 8 |
4 | 39 |
5 | 190 |
6 | 861 |
7 | 3943 |
8 | 17867 |
9 | 81496 |
10 | 372378 |
11 | 1709842 |
12 | 7879360 |
13 | 36454004 |
14 | 169239651 |
15 | 788311290 |
16 | 3683018475 |
17 | 17255646688 |
18 | 81056033636 |
19 | 381668479192 |
20 | 1801188588566 |
21 | 8517994717214 |
22 | 40360814900566 |
23 | 191589547228523 |
24 | 911009396044132 |
25 | 4338777661726040 |
[0,0,1,8,39,190,861,3943,17867,81496,372378, 1709842,7879360,36454004,169239651,788311290, 3683018475,17255646688,81056033636,381668479192, 1801188588566,8517994717214,40360814900566, 191589547228523,911009396044132,4338777661726040] |