A327551 - cp's OEIS frontend

A327551 Number of cycles in the perfect shuffle permutation mapping (1,2,...,2n) to (1,n+1,2,n+2,...,n,2n).

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

[2, 3, 3, 4, 4, 3, 3, 6, 4, 3, 7, 4, 4, 5, 3, 8, 6, 7, 3, 6, 4, 5, 9, 4, 6, 9, 3, 6, 6, 3, 3, 14, 8, 3, 7, 4, 10, 9, 7, 4, 6, 3, 13, 6, 10, 11, 15, 6, 4, 9, 3, 4, 16, 3, 5, 6, 6, 7, 13, 10, 4, 9, 5, 20, 12, 3, 11, 12, 4, 3, 7, 6, 8, 11, 3, 12, 14, 15, 5, 6, 10]

cp's OEIS Frontend

A327551 Number of cycles in the perfect shuffle permutation mapping (1,2,...,2n) to (1,n+1,2,n+2,...,n,2n).

Table of values

List of values

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

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

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