A340439 - cp's OEIS frontend

A340439 a(n) is the number of primes of the form pq + pr + q*r where p is the n-th prime and q and r are primes < p.

n	a(n)
1	0
2	0
3	1
4	3
5	5
6	7
7	9
8	12
9	11
10	16
11	20
12	23
13	22
14	32
15	30
16	34
17	42
18	53
19	48
20	49
21	61
22	62
23	67
24	66
25	81
26	73
27	94
28	94
29	103
30	105
31	114
32	112
33	114
34	142
35	123
36	153
37	164
38	155
39	167
40	170
41	183
42	196
43	204
44	228
45	208
46	235
47	242
48	231
49	240
50	254
51	267
52	246
53	281
54	269
55	297
56	306
57	298
58	340
59	356
60	338
61	378
62	339
63	421
64	363
65	424
66	386

[0, 0, 1, 3, 5, 7, 9, 12, 11, 16, 20, 23, 22, 32, 30, 34, 42, 53, 48, 49, 61, 62, 67, 66, 81, 73, 94, 94, 103, 105, 114, 112, 114, 142, 123, 153, 164, 155, 167, 170, 183, 196, 204, 228, 208, 235, 242, 231, 240, 254, 267, 246, 281, 269, 297, 306, 298, 340, 356, 338, 378, 339, 421, 363, 424, 386]

cp's OEIS Frontend

A340439 a(n) is the number of primes of the form pq + pr + q*r where p is the n-th prime and q and r are primes < p.

Table of values

List of values

n	a(n)
1	0
2	0
3	1
4	3
5	5
6	7
7	9
8	12
9	11
10	16
11	20
12	23
13	22
14	32
15	30
16	34
17	42
18	53
19	48
20	49
21	61
22	62
23	67
24	66
25	81
26	73
27	94
28	94
29	103
30	105
31	114
32	112
33	114
34	142
35	123
36	153
37	164
38	155
39	167
40	170
41	183
42	196
43	204
44	228
45	208
46	235
47	242
48	231
49	240
50	254
51	267
52	246
53	281
54	269
55	297
56	306
57	298
58	340
59	356
60	338
61	378
62	339
63	421
64	363
65	424
66	386

n	a(n)
1	0
2	0
3	1
4	3
5	5
6	7
7	9
8	12
9	11
10	16
11	20
12	23
13	22
14	32
15	30
16	34
17	42
18	53
19	48
20	49
21	61
22	62
23	67
24	66
25	81
26	73
27	94
28	94
29	103
30	105
31	114
32	112
33	114
34	142
35	123
36	153
37	164
38	155
39	167
40	170
41	183
42	196
43	204
44	228
45	208
46	235
47	242
48	231
49	240
50	254
51	267
52	246
53	281
54	269
55	297
56	306
57	298
58	340
59	356
60	338
61	378
62	339
63	421
64	363
65	424
66	386

cp's OEIS Frontend

A340439 a(n) is the number of primes of the form p*q + p*r + q*r where p is the n-th prime and q and r are primes < p.

Table of values

List of values

A340439 a(n) is the number of primes of the form pq + pr + q*r where p is the n-th prime and q and r are primes < p.

n	a(n)
1	0
2	0
3	1
4	3
5	5
6	7
7	9
8	12
9	11
10	16
11	20
12	23
13	22
14	32
15	30
16	34
17	42
18	53
19	48
20	49
21	61
22	62
23	67
24	66
25	81
26	73
27	94
28	94
29	103
30	105
31	114
32	112
33	114
34	142
35	123
36	153
37	164
38	155
39	167
40	170
41	183
42	196
43	204
44	228
45	208
46	235
47	242
48	231
49	240
50	254
51	267
52	246
53	281
54	269
55	297
56	306
57	298
58	340
59	356
60	338
61	378
62	339
63	421
64	363
65	424
66	386