A126906 - cp's OEIS frontend

A126906 Smallest k such that 1 + k^(2n+1) + Sum_{j=1..n} k^(2j) is prime.

n	a(n)
1	1
2	2
3	1
4	2
5	1
6	10
7	17
8	2
9	1
10	2
11	1
12	94
13	122
14	22
15	1
16	80
17	1
18	4
19	6
20	2
21	1
22	242
23	3
24	6
25	5
26	80
27	1
28	12
29	1
30	82
31	96
32	2
33	7
34	188
35	1
36	136
37	69
38	158
39	1
40	2
41	1
42	954
43	50
44	118
45	1
46	570
47	14
48	90
49	45
50	6
51	1
52	228
53	38
54	4
55	6
56	22
57	1
58	12
59	1
60	580
61	86
62	336
63	24
64	768
65	1
66	1170
67	408
68	340
69	1
70	896

[1, 2, 1, 2, 1, 10, 17, 2, 1, 2, 1, 94, 122, 22, 1, 80, 1, 4, 6, 2, 1, 242, 3, 6, 5, 80, 1, 12, 1, 82, 96, 2, 7, 188, 1, 136, 69, 158, 1, 2, 1, 954, 50, 118, 1, 570, 14, 90, 45, 6, 1, 228, 38, 4, 6, 22, 1, 12, 1, 580, 86, 336, 24, 768, 1, 1170, 408, 340, 1, 896]

cp's OEIS Frontend

A126906 Smallest k such that 1 + k^(2n+1) + Sum_{j=1..n} k^(2j) is prime.

Table of values

List of values

cp's OEIS Frontend

A126906 Smallest k such that 1 + k^(2*n+1) + Sum_{j=1..n} k^(2*j) is prime.

Table of values

List of values

A126906 Smallest k such that 1 + k^(2n+1) + Sum_{j=1..n} k^(2j) is prime.