n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 1 |
3 | 25 |
4 | 267 |
5 | 2265 |
6 | 17471 |
7 | 128765 |
8 | 927067 |
9 | 6591505 |
10 | 46545591 |
11 | 327428805 |
12 | 2298406067 |
13 | 16114352345 |
14 | 112902172111 |
15 | 790721005645 |
16 | 5536667136267 |
17 | 38763140938785 |
18 | 271367842141031 |
19 | 1899678231827285 |
20 | 13298160713181667 |
[0,0,1,25,267,2265,17471,128765,927067,6591505, 46545591,327428805,2298406067,16114352345, 112902172111,790721005645,5536667136267, 38763140938785,271367842141031,1899678231827285, 13298160713181667] |