A113411 - cp's OEIS frontend

A113411 Excess of number of divisors of 2n+1 of form 8k+1, 8k+3 over those of form 8k+5, 8k+7.

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

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

cp's OEIS Frontend

A113411 Excess of number of divisors of 2n+1 of form 8k+1, 8k+3 over those of form 8k+5, 8k+7.

Table of values

List of values

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

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

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