n | a(n) |
---|---|
0 | 1 |
1 | 5 |
2 | 26 |
3 | 142 |
4 | 824 |
5 | 5144 |
6 | 34960 |
7 | 261104 |
8 | 2154368 |
9 | 19651456 |
10 | 197563136 |
11 | 2177388800 |
12 | 26145442816 |
13 | 339957865472 |
14 | 4759678552064 |
15 | 71396252022784 |
16 | 1142344327331840 |
17 | 19419870744510464 |
18 | 349557742120665088 |
19 | 6641597375170543616 |
20 | 132831948602922500096 |
[1,5,26,142,824,5144,34960,261104,2154368, 19651456,197563136,2177388800,26145442816, 339957865472,4759678552064,71396252022784, 1142344327331840,19419870744510464, 349557742120665088,6641597375170543616, 132831948602922500096] |