n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 6 |
4 | 66 |
5 | 1027 |
6 | 20274 |
7 | 479403 |
8 | 13118703 |
9 | 406181493 |
10 | 14007078204 |
11 | 531778565544 |
12 | 22028404578840 |
13 | 988535991793203 |
14 | 47773653611710429 |
15 | 2473958531200630992 |
16 | 136684964338470273828 |
17 | 8026375457238402039978 |
18 | 499251236257852169668461 |
19 | 32794618460003080060574283 |
[1,1,6,66,1027,20274,479403,13118703,406181493, 14007078204,531778565544,22028404578840, 988535991793203,47773653611710429, 2473958531200630992,136684964338470273828, 8026375457238402039978,499251236257852169668461, 32794618460003080060574283] |