n | a(n) |
---|---|
1 | 1 |
2 | 6 |
3 | 45 |
4 | 365 |
5 | 3101 |
6 | 27144 |
7 | 242636 |
8 | 2202873 |
9 | 20241055 |
10 | 187766940 |
11 | 1755409652 |
12 | 16517284570 |
13 | 156265005369 |
14 | 1485269469971 |
15 | 14174126304850 |
16 | 135741870538293 |
17 | 1303996171096108 |
18 | 12561249340326373 |
19 | 121298814197201725 |
[1,6,45,365,3101,27144,242636,2202873,20241055, 187766940,1755409652,16517284570,156265005369, 1485269469971,14174126304850,135741870538293, 1303996171096108,12561249340326373, 121298814197201725] |