A179686 - cp's OEIS frontend

A179686 Let m > k > 0 be odd numbers and operations "m<+>k" and "m<->k" be defined as in A179382 and A179480. Then the sequence m<+>k, m<->(m<+>k), m<+>(m<->(m<+>k)), ... is periodic; a(n) is its smallest period starting from the seeds m=2*n-1 and k=1.

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

[1, 2, 4, 2, 2, 2, 4, 2, 6, 4, 4, 6, 8, 6, 4, 2, 4, 10, 4, 6, 2, 4, 12, 12, 4, 14, 12, 2, 14, 14, 4, 2, 18, 12, 16, 4, 8, 16, 16, 14, 18, 4, 12, 4, 4, 4, 20, 10, 6, 22, 24, 4, 26, 6, 16, 6, 20, 4, 12, 26, 8, 22, 4, 2, 34, 8, 20, 14, 34, 24, 32, 6, 20, 42, 4, 12, 8, 10, 24]

cp's OEIS Frontend

A179686 Let m > k > 0 be odd numbers and operations "m<+>k" and "m<->k" be defined as in A179382 and A179480. Then the sequence m<+>k, m<->(m<+>k), m<+>(m<->(m<+>k)), ... is periodic; a(n) is its smallest period starting from the seeds m=2*n-1 and k=1.

Table of values

List of values

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

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

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