n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 1 |
4 | 1 |
5 | 1 |
6 | 3 |
7 | 5 |
8 | 9 |
9 | 23 |
10 | 75 |
11 | 421 |
12 | 1103 |
13 | 5047 |
14 | 41783 |
15 | 281527 |
16 | 2534423 |
17 | 14161887 |
18 | 232663909 |
19 | 3988834875 |
20 | 45788778247 |
21 | 805144998681 |
22 | 14980361322965 |
23 | 620933643034787 |
24 | 16379818848380849 |
25 | 369622905371172929 |
26 | 20278641689337631649 |
27 | 995586066665500470689 |
[1,1,1,1,1,1,3,5,9,23,75,421,1103,5047,41783, 281527,2534423,14161887,232663909,3988834875, 45788778247,805144998681,14980361322965, 620933643034787,16379818848380849, 369622905371172929,20278641689337631649, 995586066665500470689] |