A056898 - cp's OEIS frontend

A056898 a(n) = smallest number m such that m^2+n is prime.

n	a(n)
1	1
2	0
3	0
4	1
5	0
6	1
7	0
8	3
9	2
10	1
11	0
12	1
13	0
14	3
15	2
16	1
17	0
18	1
19	0
20	3
21	4
22	1
23	0
24	7
25	2
26	9
27	2
28	1
29	0
30	1
31	0
32	3
33	2
34	3
35	6
36	1
37	0
38	3
39	2
40	1
41	0
42	1
43	0
44	3
45	4
46	1
47	0
48	5
49	2
50	3
51	4
52	1
53	0
54	5
55	2
56	9
57	2
58	1
59	0
60	1
61	0
62	3
63	2
64	3
65	6
66	1
67	0
68	9
69	2
70	1
71	0
72	1
73	0
74	3
75	2
76	5
77	6
78	1
79	0
80	3
81	4
82	1
83	0
84	5
85	2
86	9
87	4
88	1
89	0
90	7
91	4
92	3
93	2
94	3
95	6
96	1
97	0
98	3
99	2

[1, 0, 0, 1, 0, 1, 0, 3, 2, 1, 0, 1, 0, 3, 2, 1, 0, 1, 0, 3, 4, 1, 0, 7, 2, 9, 2, 1, 0, 1, 0, 3, 2, 3, 6, 1, 0, 3, 2, 1, 0, 1, 0, 3, 4, 1, 0, 5, 2, 3, 4, 1, 0, 5, 2, 9, 2, 1, 0, 1, 0, 3, 2, 3, 6, 1, 0, 9, 2, 1, 0, 1, 0, 3, 2, 5, 6, 1, 0, 3, 4, 1, 0, 5, 2, 9, 4, 1, 0, 7, 4, 3, 2, 3, 6, 1, 0, 3, 2]

cp's OEIS Frontend

A056898 a(n) = smallest number m such that m^2+n is prime.

Table of values

List of values

n	a(n)
1	1
2	0
3	0
4	1
5	0
6	1
7	0
8	3
9	2
10	1
11	0
12	1
13	0
14	3
15	2
16	1
17	0
18	1
19	0
20	3
21	4
22	1
23	0
24	7
25	2
26	9
27	2
28	1
29	0
30	1
31	0
32	3
33	2
34	3
35	6
36	1
37	0
38	3
39	2
40	1
41	0
42	1
43	0
44	3
45	4
46	1
47	0
48	5
49	2
50	3
51	4
52	1
53	0
54	5
55	2
56	9
57	2
58	1
59	0
60	1
61	0
62	3
63	2
64	3
65	6
66	1
67	0
68	9
69	2
70	1
71	0
72	1
73	0
74	3
75	2
76	5
77	6
78	1
79	0
80	3
81	4
82	1
83	0
84	5
85	2
86	9
87	4
88	1
89	0
90	7
91	4
92	3
93	2
94	3
95	6
96	1
97	0
98	3
99	2

n	a(n)
1	1
2	0
3	0
4	1
5	0
6	1
7	0
8	3
9	2
10	1
11	0
12	1
13	0
14	3
15	2
16	1
17	0
18	1
19	0
20	3
21	4
22	1
23	0
24	7
25	2
26	9
27	2
28	1
29	0
30	1
31	0
32	3
33	2
34	3
35	6
36	1
37	0
38	3
39	2
40	1
41	0
42	1
43	0
44	3
45	4
46	1
47	0
48	5
49	2
50	3
51	4
52	1
53	0
54	5
55	2
56	9
57	2
58	1
59	0
60	1
61	0
62	3
63	2
64	3
65	6
66	1
67	0
68	9
69	2
70	1
71	0
72	1
73	0
74	3
75	2
76	5
77	6
78	1
79	0
80	3
81	4
82	1
83	0
84	5
85	2
86	9
87	4
88	1
89	0
90	7
91	4
92	3
93	2
94	3
95	6
96	1
97	0
98	3
99	2

n	a(n)
1	1
2	0
3	0
4	1
5	0
6	1
7	0
8	3
9	2
10	1
11	0
12	1
13	0
14	3
15	2
16	1
17	0
18	1
19	0
20	3
21	4
22	1
23	0
24	7
25	2
26	9
27	2
28	1
29	0
30	1
31	0
32	3
33	2
34	3
35	6
36	1
37	0
38	3
39	2
40	1
41	0
42	1
43	0
44	3
45	4
46	1
47	0
48	5
49	2
50	3
51	4
52	1
53	0
54	5
55	2
56	9
57	2
58	1
59	0
60	1
61	0
62	3
63	2
64	3
65	6
66	1
67	0
68	9
69	2
70	1
71	0
72	1
73	0
74	3
75	2
76	5
77	6
78	1
79	0
80	3
81	4
82	1
83	0
84	5
85	2
86	9
87	4
88	1
89	0
90	7
91	4
92	3
93	2
94	3
95	6
96	1
97	0
98	3
99	2