n | a(n) |
---|---|
0 | 0 |
1 | 5 |
2 | 26 |
3 | 75 |
4 | 1104 |
5 | 3505 |
6 | 20312 |
7 | 20312 |
8 | 4961570 |
9 | 28020774 |
10 | 229788809 |
11 | 512264058 |
12 | 2489590801 |
13 | 71696026806 |
14 | 71696026806 |
15 | 71696026806 |
16 | 19061942066578 |
17 | 218459525484184 |
18 | 451090039471391 |
[0,5,26,75,1104,3505,20312,20312,4961570,28020774, 229788809,512264058,2489590801,71696026806, 71696026806,71696026806,19061942066578, 218459525484184,451090039471391] |