n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 10 |
4 | 32 |
5 | 278 |
6 | 2988 |
7 | 23058 |
8 | 199272 |
9 | 1722118 |
10 | 14609220 |
11 | 124974458 |
12 | 1068235680 |
13 | 9122055726 |
14 | 77940647452 |
15 | 665873921154 |
16 | 5688536171256 |
17 | 48598714312182 |
18 | 415188274268468 |
19 | 3547028395905802 |
20 | 30302970815445712 |
21 | 258884133806216126 |
[0,0,10,32,278,2988,23058,199272,1722118,14609220, 124974458,1068235680,9122055726,77940647452, 665873921154,5688536171256,48598714312182, 415188274268468,3547028395905802, 30302970815445712,258884133806216126] |