A331677 - OEIS

A331677 as a simple table

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

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

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

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

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