A028773 - OEIS

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A028773 as a simple table

n	a(n)
1	2
2	3
3	5
4	6
5	7
6	8
7	10
8	11
9	12
10	13
11	14
12	15
13	17
14	18
15	19
16	20
17	22
18	23
19	26
20	27
21	28
22	29
23	30
24	31
25	32
26	33
27	34
28	35
29	37
30	38
31	39
32	41
33	42
34	43
35	44
36	46
37	47
38	48
39	50
40	51
41	52
42	53
43	54
44	55
45	56
46	57
47	58
48	59

[2,3,5,6,7,8,10,11,12,13,14,15,17,18,19,20,22,23, 26,27,28,29,30,31,32,33,34,35,37,38,39,41,42,43, 44,46,47,48,50,51,52,53,54,55,56,57,58,59]