A023758 - OEIS

A023758 as a simple table

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	6
7	7
8	8
9	12
10	14
11	15
12	16
13	24
14	28
15	30
16	31
17	32
18	48
19	56
20	60
21	62
22	63
23	64
24	96
25	112
26	120
27	124
28	126
29	127
30	128
31	192
32	224
33	240
34	248
35	252
36	254
37	255
38	256
39	384
40	448
41	480
42	496
43	504
44	508
45	510
46	511
47	512
48	768
49	896
50	960
51	992
52	1008
53	1016
54	1020
55	1022
56	1023

[0,1,2,3,4,6,7,8,12,14,15,16,24,28,30,31,32,48,56, 60,62,63,64,96,112,120,124,126,127,128,192,224, 240,248,252,254,255,256,384,448,480,496,504,508, 510,511,512,768,896,960,992,1008,1016,1020,1022, 1023]