A075555 - cp's OEIS frontend

A075555 Smallest prime p such that p+n is a square, or 0 if no such p exists.

n	a(n)
1	3
2	2
3	13
4	5
5	11
6	3
7	2
8	17
9	7
10	71
11	5
12	13
13	3
14	2
15	181
16	0
17	19
18	7
19	17
20	5
21	43
22	3
23	2
24	97
25	11
26	23
27	37
28	53
29	7
30	19
31	5
32	17
33	3
34	2
35	29
36	13
37	107
38	11
39	61
40	41
41	23
42	7
43	101
44	5
45	19
46	3
47	2
48	73
49	0
50	31
51	13
52	29
53	11
54	67
55	89
56	113
57	7
58	23
59	5
60	61
61	3
62	2
63	37
64	17
65	79
66	103
67	257
68	13
69	31
70	11
71	29
72	97
73	71
74	7
75	181
76	5

[3, 2, 13, 5, 11, 3, 2, 17, 7, 71, 5, 13, 3, 2, 181, 0, 19, 7, 17, 5, 43, 3, 2, 97, 11, 23, 37, 53, 7, 19, 5, 17, 3, 2, 29, 13, 107, 11, 61, 41, 23, 7, 101, 5, 19, 3, 2, 73, 0, 31, 13, 29, 11, 67, 89, 113, 7, 23, 5, 61, 3, 2, 37, 17, 79, 103, 257, 13, 31, 11, 29, 97, 71, 7, 181, 5]

cp's OEIS Frontend

A075555 Smallest prime p such that p+n is a square, or 0 if no such p exists.

Table of values

List of values

n	a(n)
1	3
2	2
3	13
4	5
5	11
6	3
7	2
8	17
9	7
10	71
11	5
12	13
13	3
14	2
15	181
16	0
17	19
18	7
19	17
20	5
21	43
22	3
23	2
24	97
25	11
26	23
27	37
28	53
29	7
30	19
31	5
32	17
33	3
34	2
35	29
36	13
37	107
38	11
39	61
40	41
41	23
42	7
43	101
44	5
45	19
46	3
47	2
48	73
49	0
50	31
51	13
52	29
53	11
54	67
55	89
56	113
57	7
58	23
59	5
60	61
61	3
62	2
63	37
64	17
65	79
66	103
67	257
68	13
69	31
70	11
71	29
72	97
73	71
74	7
75	181
76	5

n	a(n)
1	3
2	2
3	13
4	5
5	11
6	3
7	2
8	17
9	7
10	71
11	5
12	13
13	3
14	2
15	181
16	0
17	19
18	7
19	17
20	5
21	43
22	3
23	2
24	97
25	11
26	23
27	37
28	53
29	7
30	19
31	5
32	17
33	3
34	2
35	29
36	13
37	107
38	11
39	61
40	41
41	23
42	7
43	101
44	5
45	19
46	3
47	2
48	73
49	0
50	31
51	13
52	29
53	11
54	67
55	89
56	113
57	7
58	23
59	5
60	61
61	3
62	2
63	37
64	17
65	79
66	103
67	257
68	13
69	31
70	11
71	29
72	97
73	71
74	7
75	181
76	5

n	a(n)
1	3
2	2
3	13
4	5
5	11
6	3
7	2
8	17
9	7
10	71
11	5
12	13
13	3
14	2
15	181
16	0
17	19
18	7
19	17
20	5
21	43
22	3
23	2
24	97
25	11
26	23
27	37
28	53
29	7
30	19
31	5
32	17
33	3
34	2
35	29
36	13
37	107
38	11
39	61
40	41
41	23
42	7
43	101
44	5
45	19
46	3
47	2
48	73
49	0
50	31
51	13
52	29
53	11
54	67
55	89
56	113
57	7
58	23
59	5
60	61
61	3
62	2
63	37
64	17
65	79
66	103
67	257
68	13
69	31
70	11
71	29
72	97
73	71
74	7
75	181
76	5