A023839 - OEIS

A023839 as a simple table

n	a(n)
2	0
3	2
4	3
5	5
6	6
7	7
8	8
9	9
10	9
11	10
12	10
13	13
14	12
15	15
16	13
17	15
18	15
19	14
20	16
21	18
22	16
23	18
24	19
25	19
26	22
27	23
28	23
29	24
30	23
31	23
32	22
33	26
34	22
35	24
36	25
37	24
38	24
39	28
40	26
41	27
42	28
43	27
44	28
45	33
46	30
47	29
48	31
49	33
50	33
51	34
52	35
53	38
54	37
55	39
56	37
57	37
58	38
59	38
60	42
61	40
62	38
63	40
64	39
65	41
66	38
67	36
68	38
69	43
70	40
71	44
72	42
73	44
74	42
75	44
76	45
77	48
78	49
79	49

[0,2,3,5,6,7,8,9,9,10,10,13,12,15,13,15,15,14,16, 18,16,18,19,19,22,23,23,24,23,23,22,26,22,24,25, 24,24,28,26,27,28,27,28,33,30,29,31,33,33,34,35, 38,37,39,37,37,38,38,42,40,38,40,39,41,38,36,38, 43,40,44,42,44,42,44,45,48,49,49]

n	a(n)
2	0
3	2
4	3
5	5
6	6
7	7
8	8
9	9
10	9
11	10
12	10
13	13
14	12
15	15
16	13
17	15
18	15
19	14
20	16
21	18
22	16
23	18
24	19
25	19
26	22
27	23
28	23
29	24
30	23
31	23
32	22
33	26
34	22
35	24
36	25
37	24
38	24
39	28
40	26
41	27
42	28
43	27
44	28
45	33
46	30
47	29
48	31
49	33
50	33
51	34
52	35
53	38
54	37
55	39
56	37
57	37
58	38
59	38
60	42
61	40
62	38
63	40
64	39
65	41
66	38
67	36
68	38
69	43
70	40
71	44
72	42
73	44
74	42
75	44
76	45
77	48
78	49
79	49

n	a(n)
2	0
3	2
4	3
5	5
6	6
7	7
8	8
9	9
10	9
11	10
12	10
13	13
14	12
15	15
16	13
17	15
18	15
19	14
20	16
21	18
22	16
23	18
24	19
25	19
26	22
27	23
28	23
29	24
30	23
31	23
32	22
33	26
34	22
35	24
36	25
37	24
38	24
39	28
40	26
41	27
42	28
43	27
44	28
45	33
46	30
47	29
48	31
49	33
50	33
51	34
52	35
53	38
54	37
55	39
56	37
57	37
58	38
59	38
60	42
61	40
62	38
63	40
64	39
65	41
66	38
67	36
68	38
69	43
70	40
71	44
72	42
73	44
74	42
75	44
76	45
77	48
78	49
79	49

n	a(n)
2	0
3	2
4	3
5	5
6	6
7	7
8	8
9	9
10	9
11	10
12	10
13	13
14	12
15	15
16	13
17	15
18	15
19	14
20	16
21	18
22	16
23	18
24	19
25	19
26	22
27	23
28	23
29	24
30	23
31	23
32	22
33	26
34	22
35	24
36	25
37	24
38	24
39	28
40	26
41	27
42	28
43	27
44	28
45	33
46	30
47	29
48	31
49	33
50	33
51	34
52	35
53	38
54	37
55	39
56	37
57	37
58	38
59	38
60	42
61	40
62	38
63	40
64	39
65	41
66	38
67	36
68	38
69	43
70	40
71	44
72	42
73	44
74	42
75	44
76	45
77	48
78	49
79	49