A242936 - cp's OEIS frontend

A242936 Numbers n such that nprime(n) + (n+1)(prime(n+1)) is semiprime.

n	a(n)
1	2
2	5
3	9
4	11
5	13
6	16
7	17
8	22
9	23
10	27
11	28
12	30
13	31
14	33
15	37
16	38
17	41
18	42
19	44
20	45
21	47
22	53
23	56
24	58
25	61
26	64
27	65
28	67
29	68
30	70
31	73
32	74
33	75
34	76
35	80
36	81
37	84
38	85
39	88
40	90
41	92
42	93
43	96
44	99
45	102
46	105
47	106
48	107
49	108
50	109
51	110
52	112
53	114
54	116
55	117
56	119
57	122
58	123
59	124
60	125
61	126
62	129

[2, 5, 9, 11, 13, 16, 17, 22, 23, 27, 28, 30, 31, 33, 37, 38, 41, 42, 44, 45, 47, 53, 56, 58, 61, 64, 65, 67, 68, 70, 73, 74, 75, 76, 80, 81, 84, 85, 88, 90, 92, 93, 96, 99, 102, 105, 106, 107, 108, 109, 110, 112, 114, 116, 117, 119, 122, 123, 124, 125, 126, 129]

cp's OEIS Frontend

A242936 Numbers n such that nprime(n) + (n+1)(prime(n+1)) is semiprime.

Table of values

List of values

n	a(n)
1	2
2	5
3	9
4	11
5	13
6	16
7	17
8	22
9	23
10	27
11	28
12	30
13	31
14	33
15	37
16	38
17	41
18	42
19	44
20	45
21	47
22	53
23	56
24	58
25	61
26	64
27	65
28	67
29	68
30	70
31	73
32	74
33	75
34	76
35	80
36	81
37	84
38	85
39	88
40	90
41	92
42	93
43	96
44	99
45	102
46	105
47	106
48	107
49	108
50	109
51	110
52	112
53	114
54	116
55	117
56	119
57	122
58	123
59	124
60	125
61	126
62	129

n	a(n)
1	2
2	5
3	9
4	11
5	13
6	16
7	17
8	22
9	23
10	27
11	28
12	30
13	31
14	33
15	37
16	38
17	41
18	42
19	44
20	45
21	47
22	53
23	56
24	58
25	61
26	64
27	65
28	67
29	68
30	70
31	73
32	74
33	75
34	76
35	80
36	81
37	84
38	85
39	88
40	90
41	92
42	93
43	96
44	99
45	102
46	105
47	106
48	107
49	108
50	109
51	110
52	112
53	114
54	116
55	117
56	119
57	122
58	123
59	124
60	125
61	126
62	129

cp's OEIS Frontend

A242936 Numbers n such that n*prime(n) + (n+1)*(prime(n+1)) is semiprime.

Table of values

List of values

A242936 Numbers n such that nprime(n) + (n+1)(prime(n+1)) is semiprime.

n	a(n)
1	2
2	5
3	9
4	11
5	13
6	16
7	17
8	22
9	23
10	27
11	28
12	30
13	31
14	33
15	37
16	38
17	41
18	42
19	44
20	45
21	47
22	53
23	56
24	58
25	61
26	64
27	65
28	67
29	68
30	70
31	73
32	74
33	75
34	76
35	80
36	81
37	84
38	85
39	88
40	90
41	92
42	93
43	96
44	99
45	102
46	105
47	106
48	107
49	108
50	109
51	110
52	112
53	114
54	116
55	117
56	119
57	122
58	123
59	124
60	125
61	126
62	129