n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 1 |
6 | 1 |
7 | 1 |
8 | 3 |
9 | 3 |
10 | 6 |
11 | 6 |
12 | 6 |
13 | 10 |
14 | 10 |
15 | 15 |
16 | 15 |
17 | 21 |
18 | 21 |
19 | 21 |
20 | 28 |
21 | 28 |
22 | 36 |
23 | 36 |
24 | 36 |
25 | 45 |
26 | 45 |
27 | 55 |
28 | 55 |
29 | 66 |
30 | 66 |
31 | 66 |
32 | 78 |
33 | 78 |
34 | 91 |
35 | 91 |
36 | 91 |
37 | 105 |
38 | 105 |
39 | 120 |
40 | 120 |
41 | 120 |
42 | 136 |
43 | 136 |
44 | 153 |
45 | 153 |
46 | 171 |
47 | 171 |
48 | 171 |
49 | 190 |
50 | 190 |
51 | 210 |
52 | 210 |
53 | 210 |
54 | 231 |
55 | 231 |
56 | 253 |
57 | 253 |
58 | 276 |
59 | 276 |
60 | 276 |
61 | 300 |
62 | 300 |
63 | 325 |
64 | 325 |
[0,0,0,0,1,1,1,3,3,6,6,6,10,10,15,15,21,21,21,28, 28,36,36,36,45,45,55,55,66,66,66,78,78,91,91,91, 105,105,120,120,120,136,136,153,153,171,171,171, 190,190,210,210,210,231,231,253,253,276,276,276, 300,300,325,325] |