A124738 - cp's OEIS frontend

A124738 Irregular table where the n-th row consists of those positive integers which are coprime to both n and n+1 and which are <= n.

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

[1, 1, 1, 1, 3, 1, 1, 5, 1, 3, 5, 1, 5, 7, 1, 7, 1, 3, 7, 9, 1, 5, 7, 1, 5, 7, 11, 1, 3, 5, 9, 11, 1, 11, 13, 1, 7, 11, 13, 1, 3, 5, 7, 9, 11, 13, 15, 1, 5, 7, 11, 13, 1, 5, 7, 11, 13, 17, 1, 3, 7, 9, 11, 13, 17, 1, 11, 13, 17, 19, 1, 5, 13, 17, 19, 1, 3, 5, 7, 9, 13, 15, 17, 19, 21, 1, 5, 7, 11, 13]

cp's OEIS Frontend

A124738 Irregular table where the n-th row consists of those positive integers which are coprime to both n and n+1 and which are <= n.

Table of values

List of values

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

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

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