n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 0 |
3 | 1 |
4 | 9 |
5 | 112 |
6 | 1582 |
7 | 26159 |
8 | 486170 |
9 | 10131071 |
10 | 233582056 |
11 | 5895589738 |
12 | 161776346286 |
13 | 4794754890798 |
14 | 152576687930997 |
15 | 5187562649814737 |
16 | 187666786444911220 |
17 | 7196725552061993554 |
18 | 291572346138097726746 |
19 | 12443163766976461627878 |
20 | 557880276243757014820691 |
[1,0,0,1,9,112,1582,26159,486170,10131071, 233582056,5895589738,161776346286,4794754890798, 152576687930997,5187562649814737, 187666786444911220,7196725552061993554, 291572346138097726746,12443163766976461627878, 557880276243757014820691] |