n | a(n) |
---|---|
2 | 0 |
3 | 0 |
4 | 0 |
5 | 0 |
6 | 1 |
7 | 6 |
8 | 21 |
9 | 56 |
10 | 125 |
11 | 251 |
12 | 456 |
13 | 786 |
14 | 1266 |
15 | 1980 |
16 | 2946 |
17 | 4311 |
18 | 6056 |
19 | 8436 |
20 | 11370 |
21 | 15231 |
22 | 19866 |
23 | 25851 |
24 | 32801 |
25 | 41655 |
26 | 51786 |
27 | 64366 |
28 | 78601 |
29 | 96151 |
30 | 115495 |
31 | 139246 |
32 | 165286 |
33 | 196541 |
34 | 230681 |
35 | 271585 |
36 | 315256 |
37 | 367616 |
38 | 423461 |
39 | 489011 |
[0,0,0,0,1,6,21,56,125,251,456,786,1266,1980,2946, 4311,6056,8436,11370,15231,19866,25851,32801, 41655,51786,64366,78601,96151,115495,139246, 165286,196541,230681,271585,315256,367616,423461, 489011] |