n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 2 |
3 | 21 |
4 | 232 |
5 | 3005 |
6 | 45936 |
7 | 818503 |
8 | 16736896 |
9 | 387057609 |
10 | 9996371200 |
11 | 285271753811 |
12 | 8915621446656 |
13 | 302868879571453 |
14 | 11111919647266816 |
15 | 437892582706491375 |
16 | 18446723150919663616 |
17 | 827239906198908668177 |
18 | 39346401672922831847424 |
19 | 1978419534015213180291979 |
[0,0,2,21,232,3005,45936,818503,16736896, 387057609,9996371200,285271753811,8915621446656, 302868879571453,11111919647266816, 437892582706491375,18446723150919663616, 827239906198908668177,39346401672922831847424, 1978419534015213180291979] |