A376917 - cp's OEIS frontend

A376917 Starting from Goldbach decomposition of 10 = p + q = 5 + 5, 12 = 7 + 5, and 14 = 7 + 7, a(n) is the first number in A001057 such that if 2n - 6 = p + q, 2n = p' + q', where p' = p + 6 * a(n) and q' = 2n - q' are both primes.

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

[0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 1, 1, -1, 1, 1, 0, 1, -1, 0, 1, 0, 1, -1, 0, 2, 0, 0, 0, 0, 1, 1, 0, -1, 1, 1, 1, -2, -1, -1, 0, 1, 0, 0, -1, 1, 0, 0, -1, 1, 1, 0, 1, -1, 0, -2, 0, 1, 0, 0, 2, 0, 1, 0, 1, 2, 1, 1, 0, 1, -2, 1, -2, 1, 1, 0, 1, 1, 1, -1, 2, 1, 1]

cp's OEIS Frontend

A376917 Starting from Goldbach decomposition of 10 = p + q = 5 + 5, 12 = 7 + 5, and 14 = 7 + 7, a(n) is the first number in A001057 such that if 2n - 6 = p + q, 2n = p' + q', where p' = p + 6 * a(n) and q' = 2n - q' are both primes.

Table of values

List of values

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

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

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