n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 2 |
3 | 18 |
4 | 186 |
5 | 2120 |
6 | 25724 |
7 | 325878 |
8 | 4260282 |
9 | 57048048 |
10 | 778483932 |
11 | 10786724388 |
12 | 151355847012 |
13 | 2146336125648 |
14 | 30711521221376 |
15 | 442862000693438 |
16 | 6429286894263738 |
17 | 93891870710425440 |
18 | 1378379704593824300 |
19 | 20330047491994213884 |
20 | 301111732041234778316 |
21 | 4476705468260134734384 |
22 | 66784808491631598524136 |
[0,0,2,18,186,2120,25724,325878,4260282,57048048, 778483932,10786724388,151355847012,2146336125648, 30711521221376,442862000693438,6429286894263738, 93891870710425440,1378379704593824300, 20330047491994213884,301111732041234778316, 4476705468260134734384,66784808491631598524136] |