A071222 - cp's OEIS frontend

A071222 Smallest k such that gcd(n,k) = gcd(n+1,k+1).

n	a(n)
0	1
1	2
2	1
3	2
4	1
5	4
6	1
7	2
8	1
9	2
10	1
11	4
12	1
13	2
14	1
15	2
16	1
17	4
18	1
19	2
20	1
21	2
22	1
23	4
24	1
25	2
26	1
27	2
28	1
29	6
30	1
31	2
32	1
33	2
34	1
35	4
36	1
37	2
38	1
39	2
40	1
41	4
42	1
43	2
44	1
45	2
46	1
47	4
48	1
49	2
50	1
51	2
52	1
53	4
54	1
55	2
56	1
57	2
58	1
59	6
60	1
61	2
62	1
63	2
64	1
65	4
66	1
67	2
68	1
69	2
70	1
71	4
72	1
73	2
74	1
75	2
76	1
77	4
78	1
79	2
80	1
81	2
82	1
83	4
84	1
85	2
86	1
87	2
88	1
89	6
90	1
91	2
92	1
93	2
94	1
95	4
96	1
97	2
98	1
99	2
100	1
101	4
102	1
103	2
104	1
105	2

[1, 2, 1, 2, 1, 4, 1, 2, 1, 2, 1, 4, 1, 2, 1, 2, 1, 4, 1, 2, 1, 2, 1, 4, 1, 2, 1, 2, 1, 6, 1, 2, 1, 2, 1, 4, 1, 2, 1, 2, 1, 4, 1, 2, 1, 2, 1, 4, 1, 2, 1, 2, 1, 4, 1, 2, 1, 2, 1, 6, 1, 2, 1, 2, 1, 4, 1, 2, 1, 2, 1, 4, 1, 2, 1, 2, 1, 4, 1, 2, 1, 2, 1, 4, 1, 2, 1, 2, 1, 6, 1, 2, 1, 2, 1, 4, 1, 2, 1, 2, 1, 4, 1, 2, 1, 2]

cp's OEIS Frontend

A071222 Smallest k such that gcd(n,k) = gcd(n+1,k+1).

Table of values

List of values

n	a(n)
0	1
1	2
2	1
3	2
4	1
5	4
6	1
7	2
8	1
9	2
10	1
11	4
12	1
13	2
14	1
15	2
16	1
17	4
18	1
19	2
20	1
21	2
22	1
23	4
24	1
25	2
26	1
27	2
28	1
29	6
30	1
31	2
32	1
33	2
34	1
35	4
36	1
37	2
38	1
39	2
40	1
41	4
42	1
43	2
44	1
45	2
46	1
47	4
48	1
49	2
50	1
51	2
52	1
53	4
54	1
55	2
56	1
57	2
58	1
59	6
60	1
61	2
62	1
63	2
64	1
65	4
66	1
67	2
68	1
69	2
70	1
71	4
72	1
73	2
74	1
75	2
76	1
77	4
78	1
79	2
80	1
81	2
82	1
83	4
84	1
85	2
86	1
87	2
88	1
89	6
90	1
91	2
92	1
93	2
94	1
95	4
96	1
97	2
98	1
99	2
100	1
101	4
102	1
103	2
104	1
105	2

n	a(n)
0	1
1	2
2	1
3	2
4	1
5	4
6	1
7	2
8	1
9	2
10	1
11	4
12	1
13	2
14	1
15	2
16	1
17	4
18	1
19	2
20	1
21	2
22	1
23	4
24	1
25	2
26	1
27	2
28	1
29	6
30	1
31	2
32	1
33	2
34	1
35	4
36	1
37	2
38	1
39	2
40	1
41	4
42	1
43	2
44	1
45	2
46	1
47	4
48	1
49	2
50	1
51	2
52	1
53	4
54	1
55	2
56	1
57	2
58	1
59	6
60	1
61	2
62	1
63	2
64	1
65	4
66	1
67	2
68	1
69	2
70	1
71	4
72	1
73	2
74	1
75	2
76	1
77	4
78	1
79	2
80	1
81	2
82	1
83	4
84	1
85	2
86	1
87	2
88	1
89	6
90	1
91	2
92	1
93	2
94	1
95	4
96	1
97	2
98	1
99	2
100	1
101	4
102	1
103	2
104	1
105	2

n	a(n)
0	1
1	2
2	1
3	2
4	1
5	4
6	1
7	2
8	1
9	2
10	1
11	4
12	1
13	2
14	1
15	2
16	1
17	4
18	1
19	2
20	1
21	2
22	1
23	4
24	1
25	2
26	1
27	2
28	1
29	6
30	1
31	2
32	1
33	2
34	1
35	4
36	1
37	2
38	1
39	2
40	1
41	4
42	1
43	2
44	1
45	2
46	1
47	4
48	1
49	2
50	1
51	2
52	1
53	4
54	1
55	2
56	1
57	2
58	1
59	6
60	1
61	2
62	1
63	2
64	1
65	4
66	1
67	2
68	1
69	2
70	1
71	4
72	1
73	2
74	1
75	2
76	1
77	4
78	1
79	2
80	1
81	2
82	1
83	4
84	1
85	2
86	1
87	2
88	1
89	6
90	1
91	2
92	1
93	2
94	1
95	4
96	1
97	2
98	1
99	2
100	1
101	4
102	1
103	2
104	1
105	2