A079084 - cp's OEIS frontend

A079084 Greatest prime factor of (prime(n)+1)*(prime(n+1)+1)/4.

n	a(n)
1	3
2	3
3	3
4	3
5	7
6	7
7	5
8	5
9	5
10	5
11	19
12	19
13	11
14	11
15	3
16	5
17	31
18	31
19	17
20	37
21	37
22	7
23	7
24	7
25	17
26	17
27	13
28	11
29	19
30	19
31	11
32	23
33	23
34	7
35	19
36	79
37	79
38	41
39	29
40	29
41	13
42	13
43	97
44	97
45	11
46	53
47	53
48	19
49	23
50	23
51	13
52	11
53	11
54	43
55	43
56	11
57	17
58	139
59	139
60	71
61	71
62	11
63	13
64	157
65	157
66	83
67	83
68	29
69	29
70	59
71	59
72	23
73	23
74	19

[3, 3, 3, 3, 7, 7, 5, 5, 5, 5, 19, 19, 11, 11, 3, 5, 31, 31, 17, 37, 37, 7, 7, 7, 17, 17, 13, 11, 19, 19, 11, 23, 23, 7, 19, 79, 79, 41, 29, 29, 13, 13, 97, 97, 11, 53, 53, 19, 23, 23, 13, 11, 11, 43, 43, 11, 17, 139, 139, 71, 71, 11, 13, 157, 157, 83, 83, 29, 29, 59, 59, 23, 23, 19]

cp's OEIS Frontend

A079084 Greatest prime factor of (prime(n)+1)*(prime(n+1)+1)/4.

Table of values

List of values

n	a(n)
1	3
2	3
3	3
4	3
5	7
6	7
7	5
8	5
9	5
10	5
11	19
12	19
13	11
14	11
15	3
16	5
17	31
18	31
19	17
20	37
21	37
22	7
23	7
24	7
25	17
26	17
27	13
28	11
29	19
30	19
31	11
32	23
33	23
34	7
35	19
36	79
37	79
38	41
39	29
40	29
41	13
42	13
43	97
44	97
45	11
46	53
47	53
48	19
49	23
50	23
51	13
52	11
53	11
54	43
55	43
56	11
57	17
58	139
59	139
60	71
61	71
62	11
63	13
64	157
65	157
66	83
67	83
68	29
69	29
70	59
71	59
72	23
73	23
74	19

n	a(n)
1	3
2	3
3	3
4	3
5	7
6	7
7	5
8	5
9	5
10	5
11	19
12	19
13	11
14	11
15	3
16	5
17	31
18	31
19	17
20	37
21	37
22	7
23	7
24	7
25	17
26	17
27	13
28	11
29	19
30	19
31	11
32	23
33	23
34	7
35	19
36	79
37	79
38	41
39	29
40	29
41	13
42	13
43	97
44	97
45	11
46	53
47	53
48	19
49	23
50	23
51	13
52	11
53	11
54	43
55	43
56	11
57	17
58	139
59	139
60	71
61	71
62	11
63	13
64	157
65	157
66	83
67	83
68	29
69	29
70	59
71	59
72	23
73	23
74	19

n	a(n)
1	3
2	3
3	3
4	3
5	7
6	7
7	5
8	5
9	5
10	5
11	19
12	19
13	11
14	11
15	3
16	5
17	31
18	31
19	17
20	37
21	37
22	7
23	7
24	7
25	17
26	17
27	13
28	11
29	19
30	19
31	11
32	23
33	23
34	7
35	19
36	79
37	79
38	41
39	29
40	29
41	13
42	13
43	97
44	97
45	11
46	53
47	53
48	19
49	23
50	23
51	13
52	11
53	11
54	43
55	43
56	11
57	17
58	139
59	139
60	71
61	71
62	11
63	13
64	157
65	157
66	83
67	83
68	29
69	29
70	59
71	59
72	23
73	23
74	19