A053159 - OEIS

A053159 as a simple table

n	a(n)
1	1
2	3
3	7
4	10
5	20
6	31
7	40
8	80
9	127
10	160
11	320
12	322
13	640
14	644
15	1280
16	1288
17	2560
18	2576
19	5120
20	5152
21	8191
22	10240
23	10304
24	20480
25	20608
26	40960
27	41216
28	81920
29	82432
30	131071
31	163840
32	164864
33	327680
34	329728
35	333634
36	524287
37	655360
38	659456
39	667268
40	1310720
41	1318912

[1,3,7,10,20,31,40,80,127,160,320,322,640,644, 1280,1288,2560,2576,5120,5152,8191,10240,10304, 20480,20608,40960,41216,81920,82432,131071,163840, 164864,327680,329728,333634,524287,655360,659456, 667268,1310720,1318912]