n | a(n) |
---|---|
2 | 1 |
3 | 4 |
4 | 10 |
5 | 22 |
6 | 40 |
7 | 361 |
8 | 2821 |
9 | 19057 |
10 | 110575 |
11 | 1423822 |
12 | 26284909 |
13 | 502358770 |
14 | 9341556682 |
15 | 253322462407 |
16 | 10114422061267 |
17 | 485429682957349 |
18 | 25616146962812161 |
19 | 1724462843271452173 |
20 | 157410261704230494205 |
[1,4,10,22,40,361,2821,19057,110575,1423822, 26284909,502358770,9341556682,253322462407, 10114422061267,485429682957349,25616146962812161, 1724462843271452173,157410261704230494205] |