A326820 - OEIS

A326820 as a simple table

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

[0,1,1,2,3,2,3,4,3,5,3,5,6,7,4,6,7,8,5,7,9,5,6,7, 9,10,7,11,6,7,10,11,12,7,11,13,7,11,13,14,15,8,12, 14,15,16,9,13,15,17,9,10,13,14,15,17,18,11,15,19, 10,11,12,14,15,18,19,20,11,13,15,19,21]

[0,1,1,2,3,2,3,4,3,5,3,5,6,7,4,6,7,8,5,7,9,5,6,7,
 9,10,7,11,6,7,10,11,12,7,11,13,7,11,13,14,15,8,12,
 14,15,16,9,13,15,17,9,10,13,14,15,17,18,11,15,19,
 10,11,12,14,15,18,19,20,11,13,15,19,21]

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

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

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