A124151 - cp's OEIS frontend

A124151 Smallest k such that 1 + Sum{j=1..n} k^(2*j-1) is prime.

n	a(n)
1	1
2	1
3	2
4	1
5	2
6	1
7	10
8	2
9	2
10	1
11	2
12	1
13	48
14	182
15	2
16	1
17	60
18	1
19	10
20	42
21	2
22	1
23	102
24	12
25	4
26	12
27	110
28	1
29	12
30	1
31	100
32	5
33	28
34	18
35	144
36	1
37	102
38	9
39	2
40	1
41	30
42	1
43	186
44	110
45	130
46	1
47	566
48	23
49	1234
50	2
51	12
52	1
53	336
54	103
55	142
56	341
57	1104
58	1
59	444
60	1
61	22
62	119
63	2
64	45
65	14
66	1
67	84
68	23
69	238
70	1
71	936
72	1
73	78
74	12

[1, 1, 2, 1, 2, 1, 10, 2, 2, 1, 2, 1, 48, 182, 2, 1, 60, 1, 10, 42, 2, 1, 102, 12, 4, 12, 110, 1, 12, 1, 100, 5, 28, 18, 144, 1, 102, 9, 2, 1, 30, 1, 186, 110, 130, 1, 566, 23, 1234, 2, 12, 1, 336, 103, 142, 341, 1104, 1, 444, 1, 22, 119, 2, 45, 14, 1, 84, 23, 238, 1, 936, 1, 78, 12]

cp's OEIS Frontend

A124151 Smallest k such that 1 + Sum{j=1..n} k^(2*j-1) is prime.

Table of values

List of values