A005988 - OEIS

A005988 as a simple table

n	a(n)
1	2
2	7
3	9
4	17
5	19
6	20
7	26
8	28
9	37
10	43
11	63
12	65
13	91
14	124
15	126
16	182
17	215
18	217
19	254
20	342
21	344
22	422
23	511
24	513
25	614
26	635
27	651
28	728
29	730
30	813
31	999
32	1001
33	1330
34	1332
35	1521
36	1588
37	1657
38	1727
39	1729
40	1801
41	1876
42	1953
43	2196
44	2198
45	2743
46	2745
47	3155
48	3374
49	3376

[2,7,9,17,19,20,26,28,37,43,63,65,91,124,126,182, 215,217,254,342,344,422,511,513,614,635,651,728, 730,813,999,1001,1330,1332,1521,1588,1657,1727, 1729,1801,1876,1953,2196,2198,2743,2745,3155,3374, 3376]