A299485 - cp's OEIS frontend

A299485 List of pairs (a,b) where in the n-th pair, a = number of even divisors of n and b = number of odd divisors of n.

n	a(n)
1	0
2	1
3	1
4	1
5	0
6	2
7	2
8	1
9	0
10	2
11	2
12	2
13	0
14	2
15	3
16	1
17	0
18	3
19	2
20	2
21	0
22	2
23	4
24	2
25	0
26	2
27	2
28	2
29	0
30	4
31	4
32	1
33	0
34	2
35	3
36	3
37	0
38	2
39	4
40	2
41	0
42	4
43	2
44	2
45	0
46	2
47	6
48	2
49	0
50	3
51	2
52	2
53	0
54	4
55	4
56	2
57	0
58	2
59	4
60	4
61	0
62	2
63	5
64	1
65	0
66	4
67	2
68	2
69	0
70	4
71	6
72	3
73	0
74	2
75	2
76	2
77	0
78	4
79	6
80	2
81	0
82	2
83	4
84	4
85	0
86	2
87	4
88	2
89	0
90	6
91	2
92	2
93	0
94	2
95	8
96	2
97	0
98	3
99	3
100	3
101	0
102	4
103	4
104	2

[0, 1, 1, 1, 0, 2, 2, 1, 0, 2, 2, 2, 0, 2, 3, 1, 0, 3, 2, 2, 0, 2, 4, 2, 0, 2, 2, 2, 0, 4, 4, 1, 0, 2, 3, 3, 0, 2, 4, 2, 0, 4, 2, 2, 0, 2, 6, 2, 0, 3, 2, 2, 0, 4, 4, 2, 0, 2, 4, 4, 0, 2, 5, 1, 0, 4, 2, 2, 0, 4, 6, 3, 0, 2, 2, 2, 0, 4, 6, 2, 0, 2, 4, 4, 0, 2, 4, 2, 0, 6, 2, 2, 0, 2, 8, 2, 0, 3, 3, 3, 0, 4, 4, 2]

cp's OEIS Frontend

A299485 List of pairs (a,b) where in the n-th pair, a = number of even divisors of n and b = number of odd divisors of n.

Table of values

List of values

n	a(n)
1	0
2	1
3	1
4	1
5	0
6	2
7	2
8	1
9	0
10	2
11	2
12	2
13	0
14	2
15	3
16	1
17	0
18	3
19	2
20	2
21	0
22	2
23	4
24	2
25	0
26	2
27	2
28	2
29	0
30	4
31	4
32	1
33	0
34	2
35	3
36	3
37	0
38	2
39	4
40	2
41	0
42	4
43	2
44	2
45	0
46	2
47	6
48	2
49	0
50	3
51	2
52	2
53	0
54	4
55	4
56	2
57	0
58	2
59	4
60	4
61	0
62	2
63	5
64	1
65	0
66	4
67	2
68	2
69	0
70	4
71	6
72	3
73	0
74	2
75	2
76	2
77	0
78	4
79	6
80	2
81	0
82	2
83	4
84	4
85	0
86	2
87	4
88	2
89	0
90	6
91	2
92	2
93	0
94	2
95	8
96	2
97	0
98	3
99	3
100	3
101	0
102	4
103	4
104	2

n	a(n)
1	0
2	1
3	1
4	1
5	0
6	2
7	2
8	1
9	0
10	2
11	2
12	2
13	0
14	2
15	3
16	1
17	0
18	3
19	2
20	2
21	0
22	2
23	4
24	2
25	0
26	2
27	2
28	2
29	0
30	4
31	4
32	1
33	0
34	2
35	3
36	3
37	0
38	2
39	4
40	2
41	0
42	4
43	2
44	2
45	0
46	2
47	6
48	2
49	0
50	3
51	2
52	2
53	0
54	4
55	4
56	2
57	0
58	2
59	4
60	4
61	0
62	2
63	5
64	1
65	0
66	4
67	2
68	2
69	0
70	4
71	6
72	3
73	0
74	2
75	2
76	2
77	0
78	4
79	6
80	2
81	0
82	2
83	4
84	4
85	0
86	2
87	4
88	2
89	0
90	6
91	2
92	2
93	0
94	2
95	8
96	2
97	0
98	3
99	3
100	3
101	0
102	4
103	4
104	2

n	a(n)
1	0
2	1
3	1
4	1
5	0
6	2
7	2
8	1
9	0
10	2
11	2
12	2
13	0
14	2
15	3
16	1
17	0
18	3
19	2
20	2
21	0
22	2
23	4
24	2
25	0
26	2
27	2
28	2
29	0
30	4
31	4
32	1
33	0
34	2
35	3
36	3
37	0
38	2
39	4
40	2
41	0
42	4
43	2
44	2
45	0
46	2
47	6
48	2
49	0
50	3
51	2
52	2
53	0
54	4
55	4
56	2
57	0
58	2
59	4
60	4
61	0
62	2
63	5
64	1
65	0
66	4
67	2
68	2
69	0
70	4
71	6
72	3
73	0
74	2
75	2
76	2
77	0
78	4
79	6
80	2
81	0
82	2
83	4
84	4
85	0
86	2
87	4
88	2
89	0
90	6
91	2
92	2
93	0
94	2
95	8
96	2
97	0
98	3
99	3
100	3
101	0
102	4
103	4
104	2