A218654 - cp's OEIS frontend

A218654 Number of ways to write n as x+y with 0 and x^2+3xy+y^2 prime.

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

[0, 1, 1, 1, 2, 1, 2, 2, 2, 1, 4, 1, 4, 2, 4, 2, 3, 2, 6, 3, 4, 3, 6, 2, 6, 3, 4, 3, 8, 3, 8, 2, 5, 5, 8, 4, 8, 6, 5, 4, 8, 2, 10, 6, 6, 3, 11, 4, 9, 6, 9, 7, 10, 4, 14, 6, 9, 3, 11, 4, 12, 7, 9, 10, 10, 4, 11, 5, 10, 9, 15, 4, 15, 9, 9, 8, 14, 6, 12, 8, 9, 8, 18, 4, 17, 11, 9, 11, 20, 5, 14, 10, 13, 7, 16, 9, 17, 6, 16, 10]

cp's OEIS Frontend

A218654 Number of ways to write n as x+y with 0 and x^2+3xy+y^2 prime.

Table of values

List of values

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

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

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