A246702 - cp's OEIS frontend

A246702 The number of positive k < (2n-1)^2 such that (2^k - 1)/(2n - 1)^2 is an integer.

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

[0, 1, 1, 2, 1, 1, 1, 3, 2, 1, 10, 2, 1, 1, 1, 6, 3, 2, 1, 9, 2, 3, 3, 2, 2, 6, 1, 13, 9, 1, 1, 10, 5, 1, 3, 2, 8, 3, 2, 2, 1, 1, 10, 3, 8, 7, 9, 2, 2, 3, 1, 2, 26, 1, 3, 9, 4, 2, 9, 4, 1, 6, 1, 18, 9, 1, 7, 3, 2, 1, 3, 2, 5, 10, 1, 10, 6, 38, 3, 3, 4, 1, 41, 2]

cp's OEIS Frontend

A246702 The number of positive k < (2n-1)^2 such that (2^k - 1)/(2n - 1)^2 is an integer.

Table of values

List of values

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

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

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