A025149 - OEIS

A025149 as a simple table

n	a(n)
0	1
1	0
2	0
3	0
4	1
5	1
6	1
7	1
8	1
9	2
10	2
11	3
12	3
13	4
14	4
15	6
16	6
17	8
18	9
19	11
20	12
21	15
22	17
23	20
24	23
25	27
26	31
27	36
28	41
29	47
30	55
31	62
32	71
33	81
34	93
35	105
36	120
37	135
38	154
39	174
40	197
41	221
42	251
43	281
44	317
45	356
46	400
47	447
48	502
49	561
50	628
51	701
52	782
53	871
54	972
55	1081
56	1202
57	1336
58	1483
59	1645
60	1825
61	2021
62	2237
63	2476
64	2736

[1,0,0,0,1,1,1,1,1,2,2,3,3,4,4,6,6,8,9,11,12,15, 17,20,23,27,31,36,41,47,55,62,71,81,93,105,120, 135,154,174,197,221,251,281,317,356,400,447,502, 561,628,701,782,871,972,1081,1202,1336,1483,1645, 1825,2021,2237,2476,2736]