n | a(n) |
---|---|
0 | 1 |
1 | 5 |
2 | 30 |
3 | 185 |
4 | 1150 |
5 | 7170 |
6 | 44760 |
7 | 279585 |
8 | 1746870 |
9 | 10916150 |
10 | 68219860 |
11 | 426353130 |
12 | 2664633580 |
13 | 16653699860 |
14 | 104084695500 |
15 | 650526003825 |
16 | 4065775405350 |
17 | 25411052086350 |
18 | 158818913483700 |
19 | 992617612224750 |
20 | 6203857867325700 |
21 | 38774103465635100 |
22 | 242338116077385600 |
[1,5,30,185,1150,7170,44760,279585,1746870, 10916150,68219860,426353130,2664633580, 16653699860,104084695500,650526003825, 4065775405350,25411052086350,158818913483700, 992617612224750,6203857867325700, 38774103465635100,242338116077385600] |