A320115 - cp's OEIS frontend

A320115 Filter sequence for counting the residue classes mod 4 of divisors of n.

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

[1, 2, 3, 4, 5, 6, 3, 7, 8, 9, 3, 10, 5, 6, 11, 12, 5, 13, 3, 14, 11, 6, 3, 15, 16, 9, 11, 10, 5, 17, 3, 18, 11, 9, 11, 19, 5, 6, 11, 20, 5, 17, 3, 10, 21, 6, 3, 22, 8, 23, 11, 14, 5, 17, 11, 15, 11, 9, 3, 24, 5, 6, 25, 26, 27, 17, 3, 14, 11, 17, 3, 28, 5, 9, 25, 10, 11, 17, 3, 29, 30, 9, 3, 24, 27, 6, 11, 15, 5, 31, 11, 10, 11, 6, 11, 32, 5, 13, 25, 33, 5, 17, 3, 20]

cp's OEIS Frontend

A320115 Filter sequence for counting the residue classes mod 4 of divisors of n.

Table of values

List of values

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

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

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