A127079 - cp's OEIS frontend

A127079 Number of ways to represent prime(n) as a+b with a >= b > 0 and a^2+b^2 prime.

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

[1, 1, 2, 2, 3, 3, 4, 4, 4, 6, 5, 8, 9, 7, 7, 9, 9, 11, 11, 9, 11, 13, 15, 14, 14, 18, 16, 17, 16, 20, 18, 22, 18, 21, 23, 21, 24, 24, 22, 24, 22, 28, 30, 23, 27, 24, 29, 30, 30, 28, 29, 24, 28, 30, 34, 33, 36, 35, 31, 37, 32, 36, 37, 41, 42, 42, 42, 43, 42, 38, 34, 43, 38, 45, 44]

cp's OEIS Frontend

A127079 Number of ways to represent prime(n) as a+b with a >= b > 0 and a^2+b^2 prime.

Table of values

List of values

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

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

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