n | a(n) |
---|---|
1 | 1 |
2 | 0 |
3 | 1 |
4 | 1 |
5 | 4 |
6 | 2 |
7 | 15 |
8 | 23 |
9 | 56 |
10 | 45 |
11 | 420 |
12 | 355 |
13 | 3960 |
14 | 3432 |
15 | 3003 |
16 | 5299 |
17 | 80080 |
18 | 71650 |
19 | 1225224 |
20 | 1108536 |
21 | 1007760 |
22 | 920128 |
23 | 19399380 |
24 | 17847429 |
25 | 82372752 |
26 | 76271066 |
27 | 212469400 |
28 | 197816337 |
29 | 5354228880 |
30 | 5008794758 |
31 | 145568097675 |
32 | 273491577450 |
[1,0,1,1,4,2,15,23,56,45,420,355,3960,3432,3003, 5299,80080,71650,1225224,1108536,1007760,920128, 19399380,17847429,82372752,76271066,212469400, 197816337,5354228880,5008794758,145568097675, 273491577450] |