A017829 - OEIS

A017829 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	3
11	4
12	4
13	5
14	7
15	10
16	13
17	16
18	20
19	26
20	35
21	46
22	59
23	75
24	97
25	127
26	166
27	215
28	277
29	358
30	465
31	605
32	785
33	1016
34	1315
35	1705
36	2213
37	2871
38	3721
39	4821
40	6249
41	8104
42	10510
43	13626
44	17662
45	22895
46	29684

[1,0,0,0,1,1,1,1,1,2,3,4,4,5,7,10,13,16,20,26,35, 46,59,75,97,127,166,215,277,358,465,605,785,1016, 1315,1705,2213,2871,3721,4821,6249,8104,10510, 13626,17662,22895,29684]