A066909 - cp's OEIS frontend

A066909 (product of primes < n that do not divide n) (mod n).

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

[0, 1, 2, 3, 1, 5, 2, 1, 7, 1, 1, 1, 9, 3, 7, 7, 8, 17, 18, 9, 16, 15, 15, 1, 24, 1, 26, 13, 17, 1, 19, 9, 14, 23, 3, 23, 11, 31, 19, 1, 6, 37, 26, 21, 7, 45, 35, 35, 25, 41, 2, 17, 27, 1, 31, 43, 50, 41, 15, 49, 55, 9, 10, 51, 28, 37, 30, 13, 26, 47, 24, 13, 28, 27, 73, 73, 76, 43, 4]

cp's OEIS Frontend

A066909 (product of primes < n that do not divide n) (mod n).

Table of values

List of values

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

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

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