A028261 - OEIS

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A028261 as a simple table

n	a(n)
1	2
2	3
3	4
4	5
5	6
6	7
7	8
8	9
9	10
10	11
11	12
12	13
13	14
14	15
15	17
16	18
17	19
18	20
19	21
20	22
21	23
22	25
23	26
24	27
25	28
26	29
27	30
28	31
29	32
30	33
31	34
32	35
33	37
34	38
35	39
36	41
37	42
38	43
39	44
40	45
41	46
42	47
43	48
44	49
45	50
46	51
47	52
48	53
49	55
50	57
51	58
52	59
53	61
54	62
55	63
56	64
57	65
58	66
59	67
60	68
61	69
62	70
63	71
64	72
65	73
66	74

[2,3,4,5,6,7,8,9,10,11,12,13,14,15,17,18,19,20,21, 22,23,25,26,27,28,29,30,31,32,33,34,35,37,38,39, 41,42,43,44,45,46,47,48,49,50,51,52,53,55,57,58, 59,61,62,63,64,65,66,67,68,69,70,71,72,73,74]

n	a(n)
1	2
2	3
3	4
4	5
5	6
6	7
7	8
8	9
9	10
10	11
11	12
12	13
13	14
14	15
15	17
16	18
17	19
18	20
19	21
20	22
21	23
22	25
23	26
24	27
25	28
26	29
27	30
28	31
29	32
30	33
31	34
32	35
33	37
34	38
35	39
36	41
37	42
38	43
39	44
40	45
41	46
42	47
43	48
44	49
45	50
46	51
47	52
48	53
49	55
50	57
51	58
52	59
53	61
54	62
55	63
56	64
57	65
58	66
59	67
60	68
61	69
62	70
63	71
64	72
65	73
66	74

n	a(n)
1	2
2	3
3	4
4	5
5	6
6	7
7	8
8	9
9	10
10	11
11	12
12	13
13	14
14	15
15	17
16	18
17	19
18	20
19	21
20	22
21	23
22	25
23	26
24	27
25	28
26	29
27	30
28	31
29	32
30	33
31	34
32	35
33	37
34	38
35	39
36	41
37	42
38	43
39	44
40	45
41	46
42	47
43	48
44	49
45	50
46	51
47	52
48	53
49	55
50	57
51	58
52	59
53	61
54	62
55	63
56	64
57	65
58	66
59	67
60	68
61	69
62	70
63	71
64	72
65	73
66	74

n	a(n)
1	2
2	3
3	4
4	5
5	6
6	7
7	8
8	9
9	10
10	11
11	12
12	13
13	14
14	15
15	17
16	18
17	19
18	20
19	21
20	22
21	23
22	25
23	26
24	27
25	28
26	29
27	30
28	31
29	32
30	33
31	34
32	35
33	37
34	38
35	39
36	41
37	42
38	43
39	44
40	45
41	46
42	47
43	48
44	49
45	50
46	51
47	52
48	53
49	55
50	57
51	58
52	59
53	61
54	62
55	63
56	64
57	65
58	66
59	67
60	68
61	69
62	70
63	71
64	72
65	73
66	74