A093701 - cp's OEIS frontend

A093701 a(n) = smallest m>a(n-1) such that 1+m*n is prime, a(1) = 1.

n	a(n)
1	1
2	2
3	4
4	7
5	8
6	10
7	16
8	17
9	18
10	19
11	30
12	31
13	34
14	35
15	36
16	37
17	38
18	41
19	58
20	59
21	62
22	64
23	72
24	73
25	76
26	77
27	80
28	81
29	84
30	85
31	88
32	95
33	96
34	97
35	102
36	103
37	106
38	111
39	114
40	118
41	122
42	123
43	124
44	125
45	130
46	132
47	134
48	135
49	138
50	140
51	142
52	144
53	150
54	152
55	156
56	158
57	164
58	166
59	174
60	175

[1, 2, 4, 7, 8, 10, 16, 17, 18, 19, 30, 31, 34, 35, 36, 37, 38, 41, 58, 59, 62, 64, 72, 73, 76, 77, 80, 81, 84, 85, 88, 95, 96, 97, 102, 103, 106, 111, 114, 118, 122, 123, 124, 125, 130, 132, 134, 135, 138, 140, 142, 144, 150, 152, 156, 158, 164, 166, 174, 175]

cp's OEIS Frontend

A093701 a(n) = smallest m>a(n-1) such that 1+m*n is prime, a(1) = 1.

Table of values

List of values

n	a(n)
1	1
2	2
3	4
4	7
5	8
6	10
7	16
8	17
9	18
10	19
11	30
12	31
13	34
14	35
15	36
16	37
17	38
18	41
19	58
20	59
21	62
22	64
23	72
24	73
25	76
26	77
27	80
28	81
29	84
30	85
31	88
32	95
33	96
34	97
35	102
36	103
37	106
38	111
39	114
40	118
41	122
42	123
43	124
44	125
45	130
46	132
47	134
48	135
49	138
50	140
51	142
52	144
53	150
54	152
55	156
56	158
57	164
58	166
59	174
60	175

n	a(n)
1	1
2	2
3	4
4	7
5	8
6	10
7	16
8	17
9	18
10	19
11	30
12	31
13	34
14	35
15	36
16	37
17	38
18	41
19	58
20	59
21	62
22	64
23	72
24	73
25	76
26	77
27	80
28	81
29	84
30	85
31	88
32	95
33	96
34	97
35	102
36	103
37	106
38	111
39	114
40	118
41	122
42	123
43	124
44	125
45	130
46	132
47	134
48	135
49	138
50	140
51	142
52	144
53	150
54	152
55	156
56	158
57	164
58	166
59	174
60	175

n	a(n)
1	1
2	2
3	4
4	7
5	8
6	10
7	16
8	17
9	18
10	19
11	30
12	31
13	34
14	35
15	36
16	37
17	38
18	41
19	58
20	59
21	62
22	64
23	72
24	73
25	76
26	77
27	80
28	81
29	84
30	85
31	88
32	95
33	96
34	97
35	102
36	103
37	106
38	111
39	114
40	118
41	122
42	123
43	124
44	125
45	130
46	132
47	134
48	135
49	138
50	140
51	142
52	144
53	150
54	152
55	156
56	158
57	164
58	166
59	174
60	175