n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 1 |
4 | 0 |
5 | 0 |
6 | 0 |
7 | 0 |
8 | 1 |
9 | 2 |
10 | 4 |
11 | 8 |
12 | 15 |
13 | 30 |
14 | 60 |
15 | 120 |
16 | 240 |
17 | 479 |
18 | 956 |
19 | 1908 |
20 | 3808 |
21 | 7601 |
22 | 15172 |
23 | 30284 |
24 | 60448 |
25 | 120656 |
26 | 240833 |
27 | 480710 |
28 | 959512 |
29 | 1915216 |
30 | 3822831 |
31 | 7630490 |
32 | 15230696 |
33 | 30400944 |
34 | 60681232 |
35 | 121121631 |
36 | 241762552 |
37 | 482565592 |
38 | 963215968 |
39 | 1922609105 |
[0,0,0,1,0,0,0,0,1,2,4,8,15,30,60,120,240,479,956, 1908,3808,7601,15172,30284,60448,120656,240833, 480710,959512,1915216,3822831,7630490,15230696, 30400944,60681232,121121631,241762552,482565592, 963215968,1922609105] |