A157480 - cp's OEIS frontend

A157480 a(n) = least prime p such that p + prime(n) is a square.

n	a(n)
1	2
2	13
3	11
4	2
5	5
6	3
7	19
8	17
9	2
10	7
11	5
12	107
13	23
14	101
15	2
16	11
17	5
18	3
19	257
20	29
21	71
22	2
23	17
24	11
25	3
26	43
27	41
28	37
29	467
30	31
31	17
32	13
33	7
34	5
35	47
36	173
37	167
38	1601
39	2
40	23
41	17
42	719
43	5
44	3
45	59
46	701
47	113
48	2
49	29
50	347
51	23
52	17
53	83
54	5
55	67
56	61
57	131
58	53
59	47
60	43
61	41
62	31
63	17
64	13
65	11
66	7
67	569
68	239
69	53
70	227
71	47
72	2

[2, 13, 11, 2, 5, 3, 19, 17, 2, 7, 5, 107, 23, 101, 2, 11, 5, 3, 257, 29, 71, 2, 17, 11, 3, 43, 41, 37, 467, 31, 17, 13, 7, 5, 47, 173, 167, 1601, 2, 23, 17, 719, 5, 3, 59, 701, 113, 2, 29, 347, 23, 17, 83, 5, 67, 61, 131, 53, 47, 43, 41, 31, 17, 13, 11, 7, 569, 239, 53, 227, 47, 2]

cp's OEIS Frontend

A157480 a(n) = least prime p such that p + prime(n) is a square.

Table of values

List of values