n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 30 |
3 | 292 |
4 | 3497 |
5 | 49488 |
6 | 806504 |
7 | 14860032 |
8 | 305261640 |
9 | 6914828176 |
10 | 171186477632 |
11 | 4597513706496 |
12 | 133116705145408 |
13 | 4133143450593536 |
14 | 136981118139314688 |
15 | 4826352390162440704 |
16 | 180139085757269111824 |
[1,4,30,292,3497,49488,806504,14860032,305261640, 6914828176,171186477632,4597513706496, 133116705145408,4133143450593536, 136981118139314688,4826352390162440704, 180139085757269111824] |