n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 0 |
6 | 1 |
7 | 1 |
8 | 8 |
9 | 9 |
10 | 45 |
11 | 55 |
12 | 220 |
13 | 286 |
14 | 1001 |
15 | 1365 |
16 | 4368 |
17 | 6188 |
18 | 18564 |
19 | 27132 |
20 | 77520 |
21 | 116280 |
22 | 319770 |
23 | 490314 |
24 | 1307504 |
25 | 2042975 |
26 | 5311735 |
27 | 8436285 |
28 | 21474180 |
29 | 34597290 |
30 | 86493225 |
31 | 141120525 |
32 | 347373600 |
[0,0,0,0,0,0,1,1,8,9,45,55,220,286,1001,1365,4368, 6188,18564,27132,77520,116280,319770,490314, 1307504,2042975,5311735,8436285,21474180,34597290, 86493225,141120525,347373600] |