A232174 - cp's OEIS frontend

A232174 Number of ways to write n = x + y (x, y > 0) with x + ny and x^2 + ny^2 both prime.

n	a(n)
1	0
2	1
3	2
4	2
5	1
6	2
7	3
8	1
9	2
10	2
11	3
12	2
13	5
14	1
15	4
16	3
17	2
18	2
19	1
20	1
21	2
22	5
23	4
24	1
25	7
26	2
27	4
28	4
29	6
30	2
31	5
32	1
33	4
34	3
35	5
36	2
37	8
38	2
39	6
40	3
41	3
42	3
43	5
44	2
45	5
46	4
47	7
48	5
49	7
50	3
51	5
52	3
53	3
54	1
55	11
56	4
57	7
58	6
59	5
60	2
61	4
62	3
63	8
64	5
65	6
66	1
67	14
68	1
69	6
70	7
71	6
72	6
73	8
74	3
75	6
76	7
77	7
78	5
79	9
80	3
81	3
82	5
83	7
84	7
85	15
86	5
87	6
88	5
89	2
90	5
91	15
92	6
93	12
94	8
95	7
96	3
97	15
98	8
99	10
100	5

[0, 1, 2, 2, 1, 2, 3, 1, 2, 2, 3, 2, 5, 1, 4, 3, 2, 2, 1, 1, 2, 5, 4, 1, 7, 2, 4, 4, 6, 2, 5, 1, 4, 3, 5, 2, 8, 2, 6, 3, 3, 3, 5, 2, 5, 4, 7, 5, 7, 3, 5, 3, 3, 1, 11, 4, 7, 6, 5, 2, 4, 3, 8, 5, 6, 1, 14, 1, 6, 7, 6, 6, 8, 3, 6, 7, 7, 5, 9, 3, 3, 5, 7, 7, 15, 5, 6, 5, 2, 5, 15, 6, 12, 8, 7, 3, 15, 8, 10, 5]

cp's OEIS Frontend

A232174 Number of ways to write n = x + y (x, y > 0) with x + ny and x^2 + ny^2 both prime.

Table of values

List of values

n	a(n)
1	0
2	1
3	2
4	2
5	1
6	2
7	3
8	1
9	2
10	2
11	3
12	2
13	5
14	1
15	4
16	3
17	2
18	2
19	1
20	1
21	2
22	5
23	4
24	1
25	7
26	2
27	4
28	4
29	6
30	2
31	5
32	1
33	4
34	3
35	5
36	2
37	8
38	2
39	6
40	3
41	3
42	3
43	5
44	2
45	5
46	4
47	7
48	5
49	7
50	3
51	5
52	3
53	3
54	1
55	11
56	4
57	7
58	6
59	5
60	2
61	4
62	3
63	8
64	5
65	6
66	1
67	14
68	1
69	6
70	7
71	6
72	6
73	8
74	3
75	6
76	7
77	7
78	5
79	9
80	3
81	3
82	5
83	7
84	7
85	15
86	5
87	6
88	5
89	2
90	5
91	15
92	6
93	12
94	8
95	7
96	3
97	15
98	8
99	10
100	5

n	a(n)
1	0
2	1
3	2
4	2
5	1
6	2
7	3
8	1
9	2
10	2
11	3
12	2
13	5
14	1
15	4
16	3
17	2
18	2
19	1
20	1
21	2
22	5
23	4
24	1
25	7
26	2
27	4
28	4
29	6
30	2
31	5
32	1
33	4
34	3
35	5
36	2
37	8
38	2
39	6
40	3
41	3
42	3
43	5
44	2
45	5
46	4
47	7
48	5
49	7
50	3
51	5
52	3
53	3
54	1
55	11
56	4
57	7
58	6
59	5
60	2
61	4
62	3
63	8
64	5
65	6
66	1
67	14
68	1
69	6
70	7
71	6
72	6
73	8
74	3
75	6
76	7
77	7
78	5
79	9
80	3
81	3
82	5
83	7
84	7
85	15
86	5
87	6
88	5
89	2
90	5
91	15
92	6
93	12
94	8
95	7
96	3
97	15
98	8
99	10
100	5

cp's OEIS Frontend

A232174 Number of ways to write n = x + y (x, y > 0) with x + n*y and x^2 + n*y^2 both prime.

Table of values

List of values

A232174 Number of ways to write n = x + y (x, y > 0) with x + ny and x^2 + ny^2 both prime.

n	a(n)
1	0
2	1
3	2
4	2
5	1
6	2
7	3
8	1
9	2
10	2
11	3
12	2
13	5
14	1
15	4
16	3
17	2
18	2
19	1
20	1
21	2
22	5
23	4
24	1
25	7
26	2
27	4
28	4
29	6
30	2
31	5
32	1
33	4
34	3
35	5
36	2
37	8
38	2
39	6
40	3
41	3
42	3
43	5
44	2
45	5
46	4
47	7
48	5
49	7
50	3
51	5
52	3
53	3
54	1
55	11
56	4
57	7
58	6
59	5
60	2
61	4
62	3
63	8
64	5
65	6
66	1
67	14
68	1
69	6
70	7
71	6
72	6
73	8
74	3
75	6
76	7
77	7
78	5
79	9
80	3
81	3
82	5
83	7
84	7
85	15
86	5
87	6
88	5
89	2
90	5
91	15
92	6
93	12
94	8
95	7
96	3
97	15
98	8
99	10
100	5