A305502 - cp's OEIS frontend

A305502 Number of ways to write n as x + y with 0 < x <= y such that x^3 + n*y^2 is prime.

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

[0, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 4, 2, 3, 1, 4, 2, 2, 1, 4, 1, 6, 2, 5, 2, 7, 1, 3, 2, 6, 2, 7, 2, 2, 4, 3, 3, 3, 3, 6, 1, 7, 3, 6, 7, 6, 3, 4, 1, 6, 2, 8, 3, 5, 3, 7, 5, 8, 4, 5, 3, 7, 4, 6, 4, 7, 5, 7, 5, 11, 6, 8, 4, 9, 3, 8, 4, 6, 5, 9, 5, 11, 6, 6, 6, 16, 7, 10, 5]

cp's OEIS Frontend

A305502 Number of ways to write n as x + y with 0 < x <= y such that x^3 + n*y^2 is prime.

Table of values

List of values

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

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

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