A261385 - cp's OEIS frontend

A261385 Least positive integer k such that (prime(prime(k))-1)(prime(prime(kn))-1) = prime(p)-1 for some prime p.

n	a(n)
1	1
2	3
3	221
4	15
5	13
6	137
7	63
8	103
9	44
10	2
11	31
12	3
13	45
14	3
15	4
16	104
17	38
18	237
19	61
20	19
21	56
22	183
23	22
24	11
25	15
26	374
27	9
28	5
29	42
30	97
31	2
32	47
33	4
34	19
35	23
36	399
37	3
38	103
39	29
40	10
41	2
42	109
43	51
44	1
45	52
46	80
47	23
48	64
49	76
50	2
51	218
52	3
53	7
54	98
55	4
56	145
57	10
58	12
59	213
60	87
61	36
62	181
63	28
64	169
65	71
66	25
67	72
68	71
69	54
70	50

[1, 3, 221, 15, 13, 137, 63, 103, 44, 2, 31, 3, 45, 3, 4, 104, 38, 237, 61, 19, 56, 183, 22, 11, 15, 374, 9, 5, 42, 97, 2, 47, 4, 19, 23, 399, 3, 103, 29, 10, 2, 109, 51, 1, 52, 80, 23, 64, 76, 2, 218, 3, 7, 98, 4, 145, 10, 12, 213, 87, 36, 181, 28, 169, 71, 25, 72, 71, 54, 50]

cp's OEIS Frontend

A261385 Least positive integer k such that (prime(prime(k))-1)(prime(prime(kn))-1) = prime(p)-1 for some prime p.

Table of values

List of values

n	a(n)
1	1
2	3
3	221
4	15
5	13
6	137
7	63
8	103
9	44
10	2
11	31
12	3
13	45
14	3
15	4
16	104
17	38
18	237
19	61
20	19
21	56
22	183
23	22
24	11
25	15
26	374
27	9
28	5
29	42
30	97
31	2
32	47
33	4
34	19
35	23
36	399
37	3
38	103
39	29
40	10
41	2
42	109
43	51
44	1
45	52
46	80
47	23
48	64
49	76
50	2
51	218
52	3
53	7
54	98
55	4
56	145
57	10
58	12
59	213
60	87
61	36
62	181
63	28
64	169
65	71
66	25
67	72
68	71
69	54
70	50

n	a(n)
1	1
2	3
3	221
4	15
5	13
6	137
7	63
8	103
9	44
10	2
11	31
12	3
13	45
14	3
15	4
16	104
17	38
18	237
19	61
20	19
21	56
22	183
23	22
24	11
25	15
26	374
27	9
28	5
29	42
30	97
31	2
32	47
33	4
34	19
35	23
36	399
37	3
38	103
39	29
40	10
41	2
42	109
43	51
44	1
45	52
46	80
47	23
48	64
49	76
50	2
51	218
52	3
53	7
54	98
55	4
56	145
57	10
58	12
59	213
60	87
61	36
62	181
63	28
64	169
65	71
66	25
67	72
68	71
69	54
70	50

cp's OEIS Frontend

A261385 Least positive integer k such that (prime(prime(k))-1)*(prime(prime(k*n))-1) = prime(p)-1 for some prime p.

Table of values

List of values

A261385 Least positive integer k such that (prime(prime(k))-1)(prime(prime(kn))-1) = prime(p)-1 for some prime p.

n	a(n)
1	1
2	3
3	221
4	15
5	13
6	137
7	63
8	103
9	44
10	2
11	31
12	3
13	45
14	3
15	4
16	104
17	38
18	237
19	61
20	19
21	56
22	183
23	22
24	11
25	15
26	374
27	9
28	5
29	42
30	97
31	2
32	47
33	4
34	19
35	23
36	399
37	3
38	103
39	29
40	10
41	2
42	109
43	51
44	1
45	52
46	80
47	23
48	64
49	76
50	2
51	218
52	3
53	7
54	98
55	4
56	145
57	10
58	12
59	213
60	87
61	36
62	181
63	28
64	169
65	71
66	25
67	72
68	71
69	54
70	50