A029724 - OEIS

A029724 as a simple table

n	a(n)
1	7
2	15
3	23
4	31
5	39
6	47
7	55
8	63
9	71
10	79
11	87
12	103
13	127
14	135
15	151
16	175
17	183
18	199
19	207
20	223
21	247
22	255
23	271
24	295
25	343
26	367
27	375
28	463
29	487
30	511
31	583
32	727
33	751
34	823
35	847
36	967
37	1023
38	1087
39	1255
40	1303
41	1423
42	1527
43	2047
44	2143
45	3063
46	3343
47	4447
48	5503

[7,15,23,31,39,47,55,63,71,79,87,103,127,135,151, 175,183,199,207,223,247,255,271,295,343,367,375, 463,487,511,583,727,751,823,847,967,1023,1087, 1255,1303,1423,1527,2047,2143,3063,3343,4447,5503]