A330622 - cp's OEIS frontend

A330622 Lexicographically earliest sequence of nonnegative terms such that for any n > 0 and k > 0, a(n+2*k) <> gcd(a(n), a(n+k)).

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

[0, 0, 1, 0, 0, 1, 2, 2, 3, 0, 0, 3, 0, 0, 4, 2, 5, 3, 5, 6, 3, 4, 4, 6, 6, 5, 4, 0, 0, 7, 0, 0, 7, 8, 8, 9, 0, 0, 7, 0, 0, 3, 8, 5, 3, 5, 9, 9, 5, 8, 7, 9, 2, 7, 10, 4, 3, 10, 6, 7, 6, 10, 10, 6, 6, 4, 10, 4, 9, 6, 11, 6, 6, 8, 11, 5, 8, 8, 4, 10, 11, 0, 0, 7]

cp's OEIS Frontend

A330622 Lexicographically earliest sequence of nonnegative terms such that for any n > 0 and k > 0, a(n+2*k) <> gcd(a(n), a(n+k)).

Table of values

List of values

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

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

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