A319355 - cp's OEIS frontend

A319355 Filter sequence constructed from the lengths of arithmetic progressions occurring among the divisors of n.

n	a(n)
1	1
2	2
3	2
4	3
5	2
6	4
7	2
8	5
9	3
10	5
11	2
12	6
13	2
14	5
15	4
16	7
17	2
18	8
19	2
20	9
21	5
22	5
23	2
24	10
25	3
26	5
27	5
28	11
29	2
30	12
31	2
32	9
33	5
34	5
35	5
36	13
37	2
38	5
39	5
40	14
41	2
42	15
43	2
44	9
45	16
46	5
47	2
48	17
49	3
50	9
51	5
52	9
53	2
54	18
55	5
56	15
57	5
58	5
59	2
60	19
61	2
62	5
63	9
64	20
65	5
66	18
67	2
68	9
69	5
70	21
71	2
72	22
73	2
74	5
75	8
76	9
77	5
78	15
79	2
80	23
81	7
82	5
83	2
84	24
85	5
86	5
87	5
88	21
89	2
90	25
91	4
92	9
93	5
94	5
95	5
96	26
97	2
98	9
99	9
100	27
101	2
102	15
103	2
104	21
105	28

[1, 2, 2, 3, 2, 4, 2, 5, 3, 5, 2, 6, 2, 5, 4, 7, 2, 8, 2, 9, 5, 5, 2, 10, 3, 5, 5, 11, 2, 12, 2, 9, 5, 5, 5, 13, 2, 5, 5, 14, 2, 15, 2, 9, 16, 5, 2, 17, 3, 9, 5, 9, 2, 18, 5, 15, 5, 5, 2, 19, 2, 5, 9, 20, 5, 18, 2, 9, 5, 21, 2, 22, 2, 5, 8, 9, 5, 15, 2, 23, 7, 5, 2, 24, 5, 5, 5, 21, 2, 25, 4, 9, 5, 5, 5, 26, 2, 9, 9, 27, 2, 15, 2, 21, 28]

cp's OEIS Frontend

A319355 Filter sequence constructed from the lengths of arithmetic progressions occurring among the divisors of n.

Table of values

List of values

n	a(n)
1	1
2	2
3	2
4	3
5	2
6	4
7	2
8	5
9	3
10	5
11	2
12	6
13	2
14	5
15	4
16	7
17	2
18	8
19	2
20	9
21	5
22	5
23	2
24	10
25	3
26	5
27	5
28	11
29	2
30	12
31	2
32	9
33	5
34	5
35	5
36	13
37	2
38	5
39	5
40	14
41	2
42	15
43	2
44	9
45	16
46	5
47	2
48	17
49	3
50	9
51	5
52	9
53	2
54	18
55	5
56	15
57	5
58	5
59	2
60	19
61	2
62	5
63	9
64	20
65	5
66	18
67	2
68	9
69	5
70	21
71	2
72	22
73	2
74	5
75	8
76	9
77	5
78	15
79	2
80	23
81	7
82	5
83	2
84	24
85	5
86	5
87	5
88	21
89	2
90	25
91	4
92	9
93	5
94	5
95	5
96	26
97	2
98	9
99	9
100	27
101	2
102	15
103	2
104	21
105	28

n	a(n)
1	1
2	2
3	2
4	3
5	2
6	4
7	2
8	5
9	3
10	5
11	2
12	6
13	2
14	5
15	4
16	7
17	2
18	8
19	2
20	9
21	5
22	5
23	2
24	10
25	3
26	5
27	5
28	11
29	2
30	12
31	2
32	9
33	5
34	5
35	5
36	13
37	2
38	5
39	5
40	14
41	2
42	15
43	2
44	9
45	16
46	5
47	2
48	17
49	3
50	9
51	5
52	9
53	2
54	18
55	5
56	15
57	5
58	5
59	2
60	19
61	2
62	5
63	9
64	20
65	5
66	18
67	2
68	9
69	5
70	21
71	2
72	22
73	2
74	5
75	8
76	9
77	5
78	15
79	2
80	23
81	7
82	5
83	2
84	24
85	5
86	5
87	5
88	21
89	2
90	25
91	4
92	9
93	5
94	5
95	5
96	26
97	2
98	9
99	9
100	27
101	2
102	15
103	2
104	21
105	28

n	a(n)
1	1
2	2
3	2
4	3
5	2
6	4
7	2
8	5
9	3
10	5
11	2
12	6
13	2
14	5
15	4
16	7
17	2
18	8
19	2
20	9
21	5
22	5
23	2
24	10
25	3
26	5
27	5
28	11
29	2
30	12
31	2
32	9
33	5
34	5
35	5
36	13
37	2
38	5
39	5
40	14
41	2
42	15
43	2
44	9
45	16
46	5
47	2
48	17
49	3
50	9
51	5
52	9
53	2
54	18
55	5
56	15
57	5
58	5
59	2
60	19
61	2
62	5
63	9
64	20
65	5
66	18
67	2
68	9
69	5
70	21
71	2
72	22
73	2
74	5
75	8
76	9
77	5
78	15
79	2
80	23
81	7
82	5
83	2
84	24
85	5
86	5
87	5
88	21
89	2
90	25
91	4
92	9
93	5
94	5
95	5
96	26
97	2
98	9
99	9
100	27
101	2
102	15
103	2
104	21
105	28