n | a(n) |
---|---|
1 | 0 |
2 | 4 |
3 | 64 |
4 | 1020 |
5 | 16256 |
6 | 259076 |
7 | 4128960 |
8 | 65804284 |
9 | 1048739584 |
10 | 16714029060 |
11 | 266375725376 |
12 | 4245297576956 |
13 | 67658385505920 |
14 | 1078288870517764 |
15 | 17184963542778304 |
16 | 273881127813935100 |
17 | 4364913081480183296 |
[0,4,64,1020,16256,259076,4128960,65804284, 1048739584,16714029060,266375725376,4245297576956, 67658385505920,1078288870517764,17184963542778304, 273881127813935100,4364913081480183296] |