A023673 - OEIS

A023673 as a simple table

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

[0,0,1,2,1,2,4,4,5,6,5,6,9,8,9,10,11,12,14,14,13, 14,17,16,17,18,19,20,23,22,23,24,25,26,27,26,27, 30,30,30,31,32,33,36,35,36,37,38,39,40,41,42,43, 46,45,46,45,46,49,48,49,50,51,52,55,54,55,56,58, 58,59]

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

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

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