n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 0 |
6 | 0 |
7 | 2 |
8 | 12 |
9 | 18 |
10 | 63 |
11 | 168 |
12 | 224 |
13 | 504 |
14 | 1014 |
15 | 1270 |
16 | 2420 |
17 | 4620 |
18 | 5742 |
19 | 12012 |
20 | 27027 |
21 | 35035 |
22 | 84119 |
23 | 199304 |
24 | 260064 |
25 | 601664 |
26 | 1339464 |
27 | 1720944 |
28 | 3755844 |
29 | 8093214 |
30 | 10329750 |
31 | 22591800 |
32 | 49876200 |
33 | 64071194 |
34 | 144780009 |
[0,0,0,0,0,0,2,12,18,63,168,224,504,1014,1270, 2420,4620,5742,12012,27027,35035,84119,199304, 260064,601664,1339464,1720944,3755844,8093214, 10329750,22591800,49876200,64071194,144780009] |