A000378 - OEIS

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A000378 as a simple table

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	5
7	6
8	8
9	9
10	10
11	11
12	12
13	13
14	14
15	16
16	17
17	18
18	19
19	20
20	21
21	22
22	24
23	25
24	26
25	27
26	29
27	30
28	32
29	33
30	34
31	35
32	36
33	37
34	38
35	40
36	41
37	42
38	43
39	44
40	45
41	46
42	48
43	49
44	50
45	51
46	52
47	53
48	54
49	56
50	57
51	58
52	59
53	61
54	62
55	64
56	65
57	66
58	67
59	68
60	69
61	70
62	72
63	73
64	74
65	75
66	76
67	77
68	78
69	80
70	81
71	82
72	83

[0,1,2,3,4,5,6,8,9,10,11,12,13,14,16,17,18,19,20, 21,22,24,25,26,27,29,30,32,33,34,35,36,37,38,40, 41,42,43,44,45,46,48,49,50,51,52,53,54,56,57,58, 59,61,62,64,65,66,67,68,69,70,72,73,74,75,76,77, 78,80,81,82,83]

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	5
7	6
8	8
9	9
10	10
11	11
12	12
13	13
14	14
15	16
16	17
17	18
18	19
19	20
20	21
21	22
22	24
23	25
24	26
25	27
26	29
27	30
28	32
29	33
30	34
31	35
32	36
33	37
34	38
35	40
36	41
37	42
38	43
39	44
40	45
41	46
42	48
43	49
44	50
45	51
46	52
47	53
48	54
49	56
50	57
51	58
52	59
53	61
54	62
55	64
56	65
57	66
58	67
59	68
60	69
61	70
62	72
63	73
64	74
65	75
66	76
67	77
68	78
69	80
70	81
71	82
72	83

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	5
7	6
8	8
9	9
10	10
11	11
12	12
13	13
14	14
15	16
16	17
17	18
18	19
19	20
20	21
21	22
22	24
23	25
24	26
25	27
26	29
27	30
28	32
29	33
30	34
31	35
32	36
33	37
34	38
35	40
36	41
37	42
38	43
39	44
40	45
41	46
42	48
43	49
44	50
45	51
46	52
47	53
48	54
49	56
50	57
51	58
52	59
53	61
54	62
55	64
56	65
57	66
58	67
59	68
60	69
61	70
62	72
63	73
64	74
65	75
66	76
67	77
68	78
69	80
70	81
71	82
72	83

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	5
7	6
8	8
9	9
10	10
11	11
12	12
13	13
14	14
15	16
16	17
17	18
18	19
19	20
20	21
21	22
22	24
23	25
24	26
25	27
26	29
27	30
28	32
29	33
30	34
31	35
32	36
33	37
34	38
35	40
36	41
37	42
38	43
39	44
40	45
41	46
42	48
43	49
44	50
45	51
46	52
47	53
48	54
49	56
50	57
51	58
52	59
53	61
54	62
55	64
56	65
57	66
58	67
59	68
60	69
61	70
62	72
63	73
64	74
65	75
66	76
67	77
68	78
69	80
70	81
71	82
72	83