n | a(n) |
---|---|
0 | 1 |
1 | 8 |
2 | 28 |
3 | 168 |
4 | 1008 |
5 | 6552 |
6 | 43596 |
7 | 299592 |
8 | 2096640 |
9 | 14913024 |
10 | 107370900 |
11 | 780903144 |
12 | 5726600880 |
13 | 42288908760 |
14 | 314146029564 |
15 | 2345624803704 |
16 | 17592184995840 |
17 | 132458812569720 |
18 | 1000799909722368 |
19 | 7585009898729256 |
[1,8,28,168,1008,6552,43596,299592,2096640, 14913024,107370900,780903144,5726600880, 42288908760,314146029564,2345624803704, 17592184995840,132458812569720,1000799909722368, 7585009898729256] |