n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 0 |
3 | 56 |
4 | 126 |
5 | 2016 |
6 | 16632 |
7 | 181368 |
8 | 2091375 |
9 | 26442416 |
10 | 361224864 |
11 | 5305691664 |
12 | 83351722636 |
13 | 1394398680192 |
14 | 24744942004464 |
15 | 464237094657744 |
16 | 9179911341932877 |
17 | 190814604739422048 |
18 | 4159156093506930208 |
[1,0,0,56,126,2016,16632,181368,2091375,26442416, 361224864,5305691664,83351722636,1394398680192, 24744942004464,464237094657744,9179911341932877, 190814604739422048,4159156093506930208] |