A261301 - cp's OEIS frontend

A261301 a(n+1) = abs(a(n) - gcd(a(n), n)), a(1) = 1.

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

[1, 0, 2, 1, 0, 5, 4, 3, 2, 1, 0, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, 23, 22, 21, 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, 47, 46, 45, 40, 39, 26, 25, 24, 23, 22, 21, 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, 79, 78, 75, 74, 73, 72, 71, 70, 69, 68, 67, 66, 65, 64, 63, 62, 61, 60]

cp's OEIS Frontend

A261301 a(n+1) = abs(a(n) - gcd(a(n), n)), a(1) = 1.

Table of values

List of values

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

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

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