n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 32 |
4 | 404 |
5 | 7136 |
6 | 164088 |
7 | 4683680 |
8 | 160473988 |
9 | 6437653568 |
10 | 296657482888 |
11 | 15467576203136 |
12 | 901391710293832 |
13 | 58122426582341120 |
14 | 4111838048797360624 |
15 | 316858691136196764672 |
16 | 26432968974665127895908 |
17 | 2374343115004631725352960 |
[1,1,4,32,404,7136,164088,4683680,160473988, 6437653568,296657482888,15467576203136, 901391710293832,58122426582341120, 4111838048797360624,316858691136196764672, 26432968974665127895908,2374343115004631725352960] |