A138888 - OEIS

A138888 as a simple table

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

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

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

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

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