A285805 - cp's OEIS frontend

A285805 Prime numbers p such that 6p-1 and 6p+1 are composite numbers.

n	a(n)
1	31
2	41
3	71
4	79
5	89
6	97
7	139
8	149
9	167
10	179
11	191
12	193
13	211
14	223
15	251
16	281
17	307
18	337
19	349
20	353
21	401
22	409
23	419
24	421
25	431
26	433
27	479
28	487
29	491
30	499
31	509
32	521
33	541
34	547
35	563
36	571
37	587
38	619
39	631
40	643
41	659
42	673
43	677
44	691
45	701
46	719
47	739
48	757
49	769
50	809

[31, 41, 71, 79, 89, 97, 139, 149, 167, 179, 191, 193, 211, 223, 251, 281, 307, 337, 349, 353, 401, 409, 419, 421, 431, 433, 479, 487, 491, 499, 509, 521, 541, 547, 563, 571, 587, 619, 631, 643, 659, 673, 677, 691, 701, 719, 739, 757, 769, 809]

cp's OEIS Frontend

A285805 Prime numbers p such that 6p-1 and 6p+1 are composite numbers.

Table of values

List of values

n	a(n)
1	31
2	41
3	71
4	79
5	89
6	97
7	139
8	149
9	167
10	179
11	191
12	193
13	211
14	223
15	251
16	281
17	307
18	337
19	349
20	353
21	401
22	409
23	419
24	421
25	431
26	433
27	479
28	487
29	491
30	499
31	509
32	521
33	541
34	547
35	563
36	571
37	587
38	619
39	631
40	643
41	659
42	673
43	677
44	691
45	701
46	719
47	739
48	757
49	769
50	809

n	a(n)
1	31
2	41
3	71
4	79
5	89
6	97
7	139
8	149
9	167
10	179
11	191
12	193
13	211
14	223
15	251
16	281
17	307
18	337
19	349
20	353
21	401
22	409
23	419
24	421
25	431
26	433
27	479
28	487
29	491
30	499
31	509
32	521
33	541
34	547
35	563
36	571
37	587
38	619
39	631
40	643
41	659
42	673
43	677
44	691
45	701
46	719
47	739
48	757
49	769
50	809

cp's OEIS Frontend

A285805 Prime numbers p such that 6*p-1 and 6*p+1 are composite numbers.

Table of values

List of values

A285805 Prime numbers p such that 6p-1 and 6p+1 are composite numbers.

n	a(n)
1	31
2	41
3	71
4	79
5	89
6	97
7	139
8	149
9	167
10	179
11	191
12	193
13	211
14	223
15	251
16	281
17	307
18	337
19	349
20	353
21	401
22	409
23	419
24	421
25	431
26	433
27	479
28	487
29	491
30	499
31	509
32	521
33	541
34	547
35	563
36	571
37	587
38	619
39	631
40	643
41	659
42	673
43	677
44	691
45	701
46	719
47	739
48	757
49	769
50	809