n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 2 |
6 | 6 |
7 | 4 |
8 | 15 |
9 | 20 |
10 | 63 |
11 | 62 |
12 | 135 |
13 | 150 |
14 | 398 |
15 | 347 |
16 | 913 |
17 | 895 |
18 | 2196 |
19 | 1907 |
20 | 5151 |
21 | 4483 |
22 | 11932 |
23 | 10033 |
24 | 26498 |
25 | 22645 |
26 | 59155 |
27 | 49968 |
28 | 130032 |
29 | 108271 |
30 | 283447 |
31 | 233865 |
32 | 606296 |
33 | 503884 |
[0,0,0,0,2,6,4,15,20,63,62,135,150,398,347,913, 895,2196,1907,5151,4483,11932,10033,26498,22645, 59155,49968,130032,108271,283447,233865,606296, 503884] |