A179835 - cp's OEIS frontend

A179835 Smallest k > 0 such that prime(n-k) + prime(n+k) = 2*prime(n), or 0 if there is no such k.

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

[0, 0, 1, 0, 2, 2, 2, 0, 0, 3, 3, 6, 3, 0, 0, 1, 7, 4, 8, 3, 0, 0, 7, 4, 6, 6, 2, 2, 0, 0, 6, 8, 7, 12, 0, 2, 1, 0, 6, 1, 2, 4, 8, 15, 15, 0, 1, 0, 0, 0, 6, 0, 0, 2, 1, 1, 0, 0, 6, 0, 0, 0, 19, 7, 0, 0, 17, 5, 29, 3, 15, 15, 5, 1, 5, 20, 20, 4, 7, 2, 21, 2, 21, 4, 3, 5, 4, 27, 3, 0, 0, 5, 28, 2, 0, 0, 0, 21, 0, 30]

cp's OEIS Frontend

A179835 Smallest k > 0 such that prime(n-k) + prime(n+k) = 2*prime(n), or 0 if there is no such k.

Table of values

List of values

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

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

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