A163820 - cp's OEIS frontend

A163820 Number of permutations of the divisors of n that are greater than 1, in which consecutive elements are not coprime.

n	a(n)
1	0
2	1
3	1
4	2
5	1
6	2
7	1
8	6
9	2
10	2
11	1
12	36
13	1
14	2
15	2
16	24
17	1
18	36
19	1
20	36
21	2
22	2
23	1
24	1440
25	2
26	2
27	6
28	36
29	1
30	348
31	1
32	120
33	2
34	2
35	2
36	10560
37	1
38	2
39	2
40	1440
41	1
42	348
43	1
44	36
45	36
46	2
47	1
48	100800
49	2
50	36
51	2
52	36
53	1
54	1440
55	2
56	1440
57	2
58	2
59	1
60	2218560
61	1
62	2
63	36
64	720
65	2
66	348
67	1
68	36
69	2
70	348
71	1
72	9737280
73	1
74	2
75	36
76	36
77	2
78	348
79	1
80	100800
81	24
82	2
83	1
84	2218560
85	2
86	2
87	2
88	1440
89	1
90	2218560
91	2
92	36
93	2
94	2
95	2
96	10886400
97	1
98	36
99	36
100	10560

[0, 1, 1, 2, 1, 2, 1, 6, 2, 2, 1, 36, 1, 2, 2, 24, 1, 36, 1, 36, 2, 2, 1, 1440, 2, 2, 6, 36, 1, 348, 1, 120, 2, 2, 2, 10560, 1, 2, 2, 1440, 1, 348, 1, 36, 36, 2, 1, 100800, 2, 36, 2, 36, 1, 1440, 2, 1440, 2, 2, 1, 2218560, 1, 2, 36, 720, 2, 348, 1, 36, 2, 348, 1, 9737280, 1, 2, 36, 36, 2, 348, 1, 100800, 24, 2, 1, 2218560, 2, 2, 2, 1440, 1, 2218560, 2, 36, 2, 2, 2, 10886400, 1, 36, 36, 10560]

cp's OEIS Frontend

A163820 Number of permutations of the divisors of n that are greater than 1, in which consecutive elements are not coprime.

Table of values

List of values