A232194 - cp's OEIS frontend

A232194 Number of ways to write n = x + y (x, y > 0) with nx + y and ny - x both prime.

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

[0, 0, 1, 1, 2, 1, 2, 2, 2, 3, 3, 3, 2, 3, 4, 2, 4, 2, 3, 1, 5, 4, 4, 1, 4, 3, 8, 3, 7, 2, 6, 3, 7, 4, 9, 3, 5, 4, 6, 3, 8, 4, 7, 5, 8, 3, 7, 4, 6, 3, 8, 3, 8, 2, 12, 4, 9, 4, 9, 4, 10, 3, 9, 7, 10, 5, 9, 4, 10, 4, 6, 5, 8, 3, 7, 5, 11, 7, 9, 8, 11, 5, 11, 8, 13, 4, 9, 5, 8, 7, 12, 6, 9, 5, 15, 7, 10, 5, 15, 10]

cp's OEIS Frontend

A232194 Number of ways to write n = x + y (x, y > 0) with nx + y and ny - x both prime.

Table of values

List of values

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

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

cp's OEIS Frontend

A232194 Number of ways to write n = x + y (x, y > 0) with n*x + y and n*y - x both prime.

Table of values

List of values

A232194 Number of ways to write n = x + y (x, y > 0) with nx + y and ny - x both prime.

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