A295741 - cp's OEIS frontend

A295741 a(n) is smallest divisor d of the n-th primorial such that d + prime(n)#/d is prime.

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	2
7	5
8	6
9	10
10	2
11	1
12	2
13	11
14	7
15	2
16	41
17	2
18	5
19	5
20	5
21	3
22	51
23	10
24	3
25	14
26	37
27	10
28	7
29	2
30	17
31	17
32	62
33	21
34	3
35	38
36	17
37	47
38	13
39	17
40	13
41	7
42	21
43	83
44	10
45	138
46	10
47	26
48	2
49	7
50	19
51	31
52	15
53	13
54	5
55	23
56	103
57	19
58	5
59	95
60	61
61	6
62	15
63	2
64	35
65	13
66	19
67	65
68	39
69	7
70	43
71	73
72	13
73	26
74	97
75	1
76	91
77	2
78	78
79	19
80	39
81	34
82	167
83	82
84	10
85	38
86	66
87	58
88	2
89	46
90	71

[1, 1, 1, 1, 1, 1, 2, 5, 6, 10, 2, 1, 2, 11, 7, 2, 41, 2, 5, 5, 5, 3, 51, 10, 3, 14, 37, 10, 7, 2, 17, 17, 62, 21, 3, 38, 17, 47, 13, 17, 13, 7, 21, 83, 10, 138, 10, 26, 2, 7, 19, 31, 15, 13, 5, 23, 103, 19, 5, 95, 61, 6, 15, 2, 35, 13, 19, 65, 39, 7, 43, 73, 13, 26, 97, 1, 91, 2, 78, 19, 39, 34, 167, 82, 10, 38, 66, 58, 2, 46, 71]

cp's OEIS Frontend

A295741 a(n) is smallest divisor d of the n-th primorial such that d + prime(n)#/d is prime.

Table of values

List of values

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	2
7	5
8	6
9	10
10	2
11	1
12	2
13	11
14	7
15	2
16	41
17	2
18	5
19	5
20	5
21	3
22	51
23	10
24	3
25	14
26	37
27	10
28	7
29	2
30	17
31	17
32	62
33	21
34	3
35	38
36	17
37	47
38	13
39	17
40	13
41	7
42	21
43	83
44	10
45	138
46	10
47	26
48	2
49	7
50	19
51	31
52	15
53	13
54	5
55	23
56	103
57	19
58	5
59	95
60	61
61	6
62	15
63	2
64	35
65	13
66	19
67	65
68	39
69	7
70	43
71	73
72	13
73	26
74	97
75	1
76	91
77	2
78	78
79	19
80	39
81	34
82	167
83	82
84	10
85	38
86	66
87	58
88	2
89	46
90	71

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	2
7	5
8	6
9	10
10	2
11	1
12	2
13	11
14	7
15	2
16	41
17	2
18	5
19	5
20	5
21	3
22	51
23	10
24	3
25	14
26	37
27	10
28	7
29	2
30	17
31	17
32	62
33	21
34	3
35	38
36	17
37	47
38	13
39	17
40	13
41	7
42	21
43	83
44	10
45	138
46	10
47	26
48	2
49	7
50	19
51	31
52	15
53	13
54	5
55	23
56	103
57	19
58	5
59	95
60	61
61	6
62	15
63	2
64	35
65	13
66	19
67	65
68	39
69	7
70	43
71	73
72	13
73	26
74	97
75	1
76	91
77	2
78	78
79	19
80	39
81	34
82	167
83	82
84	10
85	38
86	66
87	58
88	2
89	46
90	71

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	2
7	5
8	6
9	10
10	2
11	1
12	2
13	11
14	7
15	2
16	41
17	2
18	5
19	5
20	5
21	3
22	51
23	10
24	3
25	14
26	37
27	10
28	7
29	2
30	17
31	17
32	62
33	21
34	3
35	38
36	17
37	47
38	13
39	17
40	13
41	7
42	21
43	83
44	10
45	138
46	10
47	26
48	2
49	7
50	19
51	31
52	15
53	13
54	5
55	23
56	103
57	19
58	5
59	95
60	61
61	6
62	15
63	2
64	35
65	13
66	19
67	65
68	39
69	7
70	43
71	73
72	13
73	26
74	97
75	1
76	91
77	2
78	78
79	19
80	39
81	34
82	167
83	82
84	10
85	38
86	66
87	58
88	2
89	46
90	71