A168090 - OEIS

A168090 as a simple table

n	a(n)
0	1
1	0
2	2
3	2
4	0
5	4
6	4
7	0
8	8
9	8
10	0
11	16
12	16
13	0
14	32
15	32
16	0
17	64
18	64
19	0
20	128
21	128
22	0
23	256
24	256
25	0
26	512
27	512
28	0
29	1024
30	1024
31	0
32	2048
33	2048
34	0
35	4096
36	4096
37	0
38	8192
39	8192
40	0
41	16384
42	16384
43	0
44	32768
45	32768
46	0
47	65536
48	65536
49	0
50	131072
51	131072
52	0
53	262144
54	262144
55	0
56	524288

[1,0,2,2,0,4,4,0,8,8,0,16,16,0,32,32,0,64,64,0, 128,128,0,256,256,0,512,512,0,1024,1024,0,2048, 2048,0,4096,4096,0,8192,8192,0,16384,16384,0, 32768,32768,0,65536,65536,0,131072,131072,0, 262144,262144,0,524288]