n | a(n) |
---|---|
0 | 1 |
1 | 5 |
2 | 40 |
3 | 200 |
4 | 872 |
5 | 3624 |
6 | 14760 |
7 | 59560 |
8 | 239272 |
9 | 959144 |
10 | 3840680 |
11 | 15370920 |
12 | 61500072 |
13 | 246033064 |
14 | 984197800 |
15 | 3936922280 |
[1,5,40,200,872,3624,14760,59560,239272,959144, 3840680,15370920,61500072,246033064,984197800, 3936922280] |