A128708 - cp's OEIS frontend

A128708 Let j(n) be the Jacobsthal function, A048669. Then a(n) is the number of times that the gap j(n) appears between consecutive numbers <= n+1 and coprime to n.

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

[1, 1, 1, 2, 1, 1, 1, 4, 3, 1, 1, 2, 1, 1, 2, 8, 1, 3, 1, 2, 2, 1, 1, 4, 5, 1, 9, 2, 1, 2, 1, 16, 2, 1, 2, 6, 1, 1, 2, 4, 1, 2, 1, 2, 6, 1, 1, 8, 7, 5, 2, 2, 1, 9, 2, 4, 2, 1, 1, 4, 1, 1, 6, 32, 2, 2, 1, 2, 2, 2, 1, 12, 1, 1, 10, 2, 2, 2, 1, 8, 27, 1, 1, 4, 2, 1, 2, 4, 1, 6, 2, 2, 2, 1, 2, 16, 1, 7, 6, 10]

cp's OEIS Frontend

A128708 Let j(n) be the Jacobsthal function, A048669. Then a(n) is the number of times that the gap j(n) appears between consecutive numbers <= n+1 and coprime to n.

Table of values

List of values

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

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

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