A103784 - cp's OEIS frontend

A103784 Minimal n that makes primorial P(k)*n-1 prime, k>=2, n>0.

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

[1, 1, 2, 1, 1, 2, 2, 3, 6, 3, 2, 1, 18, 3, 7, 13, 11, 24, 2, 13, 2, 16, 1, 4, 29, 6, 18, 4, 2, 11, 14, 13, 38, 13, 14, 9, 17, 12, 13, 10, 31, 19, 5, 58, 5, 15, 22, 18, 8, 5, 11, 27, 24, 13, 10, 11, 3, 36, 18, 19, 13, 16, 12, 3, 1, 53, 1, 11, 19, 15, 81, 14, 28, 7, 5, 57, 40, 40, 46, 6, 10]

cp's OEIS Frontend

A103784 Minimal n that makes primorial P(k)*n-1 prime, k>=2, n>0.

Table of values

List of values

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

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

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