A075518 - OEIS

A075518 as a simple table

n	a(n)
1	0
2	0
3	1
4	1
5	2
6	3
7	4
8	4
9	5
10	7
11	7
12	9
13	10
14	10
15	11
16	13
17	14
18	15
19	16
20	17
21	18
22	19
23	20
24	22
25	24
26	25
27	25
28	26
29	27
30	28
31	31
32	32
33	34
34	34
35	37
36	37
37	39
38	40
39	41
40	43
41	44
42	45
43	47
44	48
45	49
46	49
47	52
48	55
49	56
50	57
51	58
52	59
53	60
54	62
55	64
56	65
57	67
58	67
59	69
60	70
61	70
62	73
63	76
64	77
65	78
66	79
67	82
68	84
69	86
70	87
71	88
72	89
73	91

[0,0,1,1,2,3,4,4,5,7,7,9,10,10,11,13,14,15,16,17, 18,19,20,22,24,25,25,26,27,28,31,32,34,34,37,37, 39,40,41,43,44,45,47,48,49,49,52,55,56,57,58,59, 60,62,64,65,67,67,69,70,70,73,76,77,78,79,82,84, 86,87,88,89,91]

n	a(n)
1	0
2	0
3	1
4	1
5	2
6	3
7	4
8	4
9	5
10	7
11	7
12	9
13	10
14	10
15	11
16	13
17	14
18	15
19	16
20	17
21	18
22	19
23	20
24	22
25	24
26	25
27	25
28	26
29	27
30	28
31	31
32	32
33	34
34	34
35	37
36	37
37	39
38	40
39	41
40	43
41	44
42	45
43	47
44	48
45	49
46	49
47	52
48	55
49	56
50	57
51	58
52	59
53	60
54	62
55	64
56	65
57	67
58	67
59	69
60	70
61	70
62	73
63	76
64	77
65	78
66	79
67	82
68	84
69	86
70	87
71	88
72	89
73	91

n	a(n)
1	0
2	0
3	1
4	1
5	2
6	3
7	4
8	4
9	5
10	7
11	7
12	9
13	10
14	10
15	11
16	13
17	14
18	15
19	16
20	17
21	18
22	19
23	20
24	22
25	24
26	25
27	25
28	26
29	27
30	28
31	31
32	32
33	34
34	34
35	37
36	37
37	39
38	40
39	41
40	43
41	44
42	45
43	47
44	48
45	49
46	49
47	52
48	55
49	56
50	57
51	58
52	59
53	60
54	62
55	64
56	65
57	67
58	67
59	69
60	70
61	70
62	73
63	76
64	77
65	78
66	79
67	82
68	84
69	86
70	87
71	88
72	89
73	91

n	a(n)
1	0
2	0
3	1
4	1
5	2
6	3
7	4
8	4
9	5
10	7
11	7
12	9
13	10
14	10
15	11
16	13
17	14
18	15
19	16
20	17
21	18
22	19
23	20
24	22
25	24
26	25
27	25
28	26
29	27
30	28
31	31
32	32
33	34
34	34
35	37
36	37
37	39
38	40
39	41
40	43
41	44
42	45
43	47
44	48
45	49
46	49
47	52
48	55
49	56
50	57
51	58
52	59
53	60
54	62
55	64
56	65
57	67
58	67
59	69
60	70
61	70
62	73
63	76
64	77
65	78
66	79
67	82
68	84
69	86
70	87
71	88
72	89
73	91