A113339 - cp's OEIS frontend

A113339 Integers n such that prime(n+1)-prime(n) is nonprime, squarefree. Except for the initial term of 1, the terms are k-semiprime for some k>=2.

n	a(n)
1	1
2	9
3	11
4	15
5	16
6	18
7	21
8	23
9	30
10	32
11	34
12	36
13	37
14	39
15	40
16	42
17	51
18	53
19	54
20	55
21	56
22	58
23	61
24	62
25	66
26	67
27	68
28	71
29	73
30	74
31	76
32	80
33	82
34	84
35	86
36	96
37	100
38	101
39	102
40	103
41	105
42	106
43	107
44	108
45	110
46	111
47	115
48	118
49	119
50	123
51	125
52	127
53	129
54	130
55	133
56	137
57	138
58	141
59	145
60	146
61	150

[1, 9, 11, 15, 16, 18, 21, 23, 30, 32, 34, 36, 37, 39, 40, 42, 51, 53, 54, 55, 56, 58, 61, 62, 66, 67, 68, 71, 73, 74, 76, 80, 82, 84, 86, 96, 100, 101, 102, 103, 105, 106, 107, 108, 110, 111, 115, 118, 119, 123, 125, 127, 129, 130, 133, 137, 138, 141, 145, 146, 150]

cp's OEIS Frontend

A113339 Integers n such that prime(n+1)-prime(n) is nonprime, squarefree. Except for the initial term of 1, the terms are k-semiprime for some k>=2.

Table of values

List of values

n	a(n)
1	1
2	9
3	11
4	15
5	16
6	18
7	21
8	23
9	30
10	32
11	34
12	36
13	37
14	39
15	40
16	42
17	51
18	53
19	54
20	55
21	56
22	58
23	61
24	62
25	66
26	67
27	68
28	71
29	73
30	74
31	76
32	80
33	82
34	84
35	86
36	96
37	100
38	101
39	102
40	103
41	105
42	106
43	107
44	108
45	110
46	111
47	115
48	118
49	119
50	123
51	125
52	127
53	129
54	130
55	133
56	137
57	138
58	141
59	145
60	146
61	150

n	a(n)
1	1
2	9
3	11
4	15
5	16
6	18
7	21
8	23
9	30
10	32
11	34
12	36
13	37
14	39
15	40
16	42
17	51
18	53
19	54
20	55
21	56
22	58
23	61
24	62
25	66
26	67
27	68
28	71
29	73
30	74
31	76
32	80
33	82
34	84
35	86
36	96
37	100
38	101
39	102
40	103
41	105
42	106
43	107
44	108
45	110
46	111
47	115
48	118
49	119
50	123
51	125
52	127
53	129
54	130
55	133
56	137
57	138
58	141
59	145
60	146
61	150

n	a(n)
1	1
2	9
3	11
4	15
5	16
6	18
7	21
8	23
9	30
10	32
11	34
12	36
13	37
14	39
15	40
16	42
17	51
18	53
19	54
20	55
21	56
22	58
23	61
24	62
25	66
26	67
27	68
28	71
29	73
30	74
31	76
32	80
33	82
34	84
35	86
36	96
37	100
38	101
39	102
40	103
41	105
42	106
43	107
44	108
45	110
46	111
47	115
48	118
49	119
50	123
51	125
52	127
53	129
54	130
55	133
56	137
57	138
58	141
59	145
60	146
61	150