A261281 - cp's OEIS frontend

A261281 Least positive integer k with prime(k)^2-2 and prime(prime(k))^2-2 both prime such that prime(kn)^2-2 and prime(prime(kn))^2-2 are all prime.

n	a(n)
1	1
2	1
3	319
4	134
5	34
6	62
7	2
8	536
9	5215
10	15
11	3965
12	2168
13	34
14	1
15	1
16	737
17	2
18	7075
19	3699
20	419
21	132
22	372
23	14
24	2
25	34
26	2
27	52
28	1
29	668
30	36561
31	2
32	48
33	1239
34	1
35	401
36	1613
37	1646
38	2472
39	43
40	31361
41	134
42	1103
43	1
44	5374
45	6201
46	466
47	1
48	1
49	2118
50	2
51	1646
52	1
53	1343
54	856
55	28
56	1868
57	10324
58	360
59	2845
60	6571
61	65
62	1
63	419
64	43
65	1
66	2
67	2
68	1
69	889
70	202

[1, 1, 319, 134, 34, 62, 2, 536, 5215, 15, 3965, 2168, 34, 1, 1, 737, 2, 7075, 3699, 419, 132, 372, 14, 2, 34, 2, 52, 1, 668, 36561, 2, 48, 1239, 1, 401, 1613, 1646, 2472, 43, 31361, 134, 1103, 1, 5374, 6201, 466, 1, 1, 2118, 2, 1646, 1, 1343, 856, 28, 1868, 10324, 360, 2845, 6571, 65, 1, 419, 43, 1, 2, 2, 1, 889, 202]

cp's OEIS Frontend

A261281 Least positive integer k with prime(k)^2-2 and prime(prime(k))^2-2 both prime such that prime(kn)^2-2 and prime(prime(kn))^2-2 are all prime.

Table of values

List of values

cp's OEIS Frontend

A261281 Least positive integer k with prime(k)^2-2 and prime(prime(k))^2-2 both prime such that prime(k*n)^2-2 and prime(prime(k*n))^2-2 are all prime.

Table of values

List of values

A261281 Least positive integer k with prime(k)^2-2 and prime(prime(k))^2-2 both prime such that prime(kn)^2-2 and prime(prime(kn))^2-2 are all prime.