A204580 - cp's OEIS frontend

A204580 Number of primes of the form A204142[i]*A204142[j]+2 (i,j <= n), larger than A204142[n].

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	8
8	10
9	12
10	15
11	15
12	17
13	20
14	24
15	27
16	30
17	32
18	32
19	34
20	36
21	39
22	41
23	43
24	46
25	50
26	51
27	54
28	60
29	64
30	68
31	71
32	76
33	78
34	80
35	83
36	86
37	92
38	93
39	98
40	101
41	104
42	106
43	109
44	113
45	114
46	117
47	126
48	128
49	133
50	135
51	139
52	143
53	147
54	150
55	160
56	166
57	173
58	181

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 15, 17, 20, 24, 27, 30, 32, 32, 34, 36, 39, 41, 43, 46, 50, 51, 54, 60, 64, 68, 71, 76, 78, 80, 83, 86, 92, 93, 98, 101, 104, 106, 109, 113, 114, 117, 126, 128, 133, 135, 139, 143, 147, 150, 160, 166, 173, 181]

cp's OEIS Frontend

A204580 Number of primes of the form A204142[i]*A204142[j]+2 (i,j <= n), larger than A204142[n].

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	8
8	10
9	12
10	15
11	15
12	17
13	20
14	24
15	27
16	30
17	32
18	32
19	34
20	36
21	39
22	41
23	43
24	46
25	50
26	51
27	54
28	60
29	64
30	68
31	71
32	76
33	78
34	80
35	83
36	86
37	92
38	93
39	98
40	101
41	104
42	106
43	109
44	113
45	114
46	117
47	126
48	128
49	133
50	135
51	139
52	143
53	147
54	150
55	160
56	166
57	173
58	181

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	8
8	10
9	12
10	15
11	15
12	17
13	20
14	24
15	27
16	30
17	32
18	32
19	34
20	36
21	39
22	41
23	43
24	46
25	50
26	51
27	54
28	60
29	64
30	68
31	71
32	76
33	78
34	80
35	83
36	86
37	92
38	93
39	98
40	101
41	104
42	106
43	109
44	113
45	114
46	117
47	126
48	128
49	133
50	135
51	139
52	143
53	147
54	150
55	160
56	166
57	173
58	181

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	8
8	10
9	12
10	15
11	15
12	17
13	20
14	24
15	27
16	30
17	32
18	32
19	34
20	36
21	39
22	41
23	43
24	46
25	50
26	51
27	54
28	60
29	64
30	68
31	71
32	76
33	78
34	80
35	83
36	86
37	92
38	93
39	98
40	101
41	104
42	106
43	109
44	113
45	114
46	117
47	126
48	128
49	133
50	135
51	139
52	143
53	147
54	150
55	160
56	166
57	173
58	181