n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 3 |
4 | 40 |
5 | 185 |
6 | 3936 |
7 | 35917 |
8 | 978160 |
9 | 14301513 |
10 | 464105440 |
11 | 9648558161 |
12 | 361181788584 |
13 | 9884595572293 |
14 | 419174374377136 |
15 | 14317833123918885 |
16 | 679698565575210976 |
17 | 27884513269105178033 |
18 | 1468696946887669701312 |
[1,2,3,40,185,3936,35917,978160,14301513, 464105440,9648558161,361181788584,9884595572293, 419174374377136,14317833123918885, 679698565575210976,27884513269105178033, 1468696946887669701312] |