A373938 - cp's OEIS frontend

A373938 Number of k in the range s(1), ..., s(n-1) such that gcd(k, s(n)) > 1, where s = A089088.

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

[0, 0, 1, 2, 1, 3, 2, 4, 1, 7, 6, 1, 6, 7, 11, 11, 8, 10, 1, 15, 4, 12, 1, 8, 15, 21, 15, 12, 16, 1, 10, 23, 18, 1, 14, 23, 29, 23, 20, 22, 1, 31, 6, 29, 18, 27, 35, 14, 31, 20, 28, 1, 43, 30, 1, 26, 31, 16, 45, 35, 24, 45, 47, 36, 1, 34, 39, 16, 53, 47, 26, 40, 1, 59, 20, 42, 1, 30, 47, 65, 18]

cp's OEIS Frontend

A373938 Number of k in the range s(1), ..., s(n-1) such that gcd(k, s(n)) > 1, where s = A089088.

Table of values

List of values

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

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

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