A245203 - cp's OEIS frontend

A245203 Least k>=0 such that A004767(n) = 4n+3 is the mean of primes 4(n-k)+3 and 4(n+k)+3; or -1 if no such k exists.

n	a(n)
0	0
1	0
2	0
3	1
4	0
5	0
6	1
7	0
8	3
9	2
10	0
11	0
12	2
13	3
14	0
15	1
16	0
17	0
18	1
19	0
20	0
21	4
22	3
23	3
24	7
25	0
26	0
27	7
28	3
29	3
30	4
31	0
32	0
33	1
34	0
35	9
36	4
37	0
38	6
39	2
40	0
41	0
42	2
43	6
44	0
45	4
46	6
47	0
48	1
49	0
50	6
51	4
52	0
53	6
54	2
55	0
56	0
57	2
58	9
59	0
60	5
61	6
62	0
63	4
64	12
65	0
66	1
67	0
68	9
69	7
70	0
71	6
72	5
73	3
74	12
75	16
76	0
77	0
78	8
79	3
80	15
81	5
82	0
83	6
84	2
85	9
86	0
87	17
88	6
89	0
90	1
91	0
92	3
93	2
94	0
95	0
96	14
97	27
98	9
99	5
100	9
101	6
102	7
103	12
104	0
105	10
106	15
107	0
108	1
109	0
110	0
111	4
112	3
113	3
114	5
115	0
116	0
117	2
118	3
119	0
120	1
121	0
122	0
123	1
124	0
125	0
126	4

[0, 0, 0, 1, 0, 0, 1, 0, 3, 2, 0, 0, 2, 3, 0, 1, 0, 0, 1, 0, 0, 4, 3, 3, 7, 0, 0, 7, 3, 3, 4, 0, 0, 1, 0, 9, 4, 0, 6, 2, 0, 0, 2, 6, 0, 4, 6, 0, 1, 0, 6, 4, 0, 6, 2, 0, 0, 2, 9, 0, 5, 6, 0, 4, 12, 0, 1, 0, 9, 7, 0, 6, 5, 3, 12, 16, 0, 0, 8, 3, 15, 5, 0, 6, 2, 9, 0, 17, 6, 0, 1, 0, 3, 2, 0, 0, 14, 27, 9, 5, 9, 6, 7, 12, 0, 10, 15, 0, 1, 0, 0, 4, 3, 3, 5, 0, 0, 2, 3, 0, 1, 0, 0, 1, 0, 0, 4]

cp's OEIS Frontend

A245203 Least k>=0 such that A004767(n) = 4n+3 is the mean of primes 4(n-k)+3 and 4(n+k)+3; or -1 if no such k exists.

Table of values

List of values

n	a(n)
0	0
1	0
2	0
3	1
4	0
5	0
6	1
7	0
8	3
9	2
10	0
11	0
12	2
13	3
14	0
15	1
16	0
17	0
18	1
19	0
20	0
21	4
22	3
23	3
24	7
25	0
26	0
27	7
28	3
29	3
30	4
31	0
32	0
33	1
34	0
35	9
36	4
37	0
38	6
39	2
40	0
41	0
42	2
43	6
44	0
45	4
46	6
47	0
48	1
49	0
50	6
51	4
52	0
53	6
54	2
55	0
56	0
57	2
58	9
59	0
60	5
61	6
62	0
63	4
64	12
65	0
66	1
67	0
68	9
69	7
70	0
71	6
72	5
73	3
74	12
75	16
76	0
77	0
78	8
79	3
80	15
81	5
82	0
83	6
84	2
85	9
86	0
87	17
88	6
89	0
90	1
91	0
92	3
93	2
94	0
95	0
96	14
97	27
98	9
99	5
100	9
101	6
102	7
103	12
104	0
105	10
106	15
107	0
108	1
109	0
110	0
111	4
112	3
113	3
114	5
115	0
116	0
117	2
118	3
119	0
120	1
121	0
122	0
123	1
124	0
125	0
126	4

n	a(n)
0	0
1	0
2	0
3	1
4	0
5	0
6	1
7	0
8	3
9	2
10	0
11	0
12	2
13	3
14	0
15	1
16	0
17	0
18	1
19	0
20	0
21	4
22	3
23	3
24	7
25	0
26	0
27	7
28	3
29	3
30	4
31	0
32	0
33	1
34	0
35	9
36	4
37	0
38	6
39	2
40	0
41	0
42	2
43	6
44	0
45	4
46	6
47	0
48	1
49	0
50	6
51	4
52	0
53	6
54	2
55	0
56	0
57	2
58	9
59	0
60	5
61	6
62	0
63	4
64	12
65	0
66	1
67	0
68	9
69	7
70	0
71	6
72	5
73	3
74	12
75	16
76	0
77	0
78	8
79	3
80	15
81	5
82	0
83	6
84	2
85	9
86	0
87	17
88	6
89	0
90	1
91	0
92	3
93	2
94	0
95	0
96	14
97	27
98	9
99	5
100	9
101	6
102	7
103	12
104	0
105	10
106	15
107	0
108	1
109	0
110	0
111	4
112	3
113	3
114	5
115	0
116	0
117	2
118	3
119	0
120	1
121	0
122	0
123	1
124	0
125	0
126	4

n	a(n)
0	0
1	0
2	0
3	1
4	0
5	0
6	1
7	0
8	3
9	2
10	0
11	0
12	2
13	3
14	0
15	1
16	0
17	0
18	1
19	0
20	0
21	4
22	3
23	3
24	7
25	0
26	0
27	7
28	3
29	3
30	4
31	0
32	0
33	1
34	0
35	9
36	4
37	0
38	6
39	2
40	0
41	0
42	2
43	6
44	0
45	4
46	6
47	0
48	1
49	0
50	6
51	4
52	0
53	6
54	2
55	0
56	0
57	2
58	9
59	0
60	5
61	6
62	0
63	4
64	12
65	0
66	1
67	0
68	9
69	7
70	0
71	6
72	5
73	3
74	12
75	16
76	0
77	0
78	8
79	3
80	15
81	5
82	0
83	6
84	2
85	9
86	0
87	17
88	6
89	0
90	1
91	0
92	3
93	2
94	0
95	0
96	14
97	27
98	9
99	5
100	9
101	6
102	7
103	12
104	0
105	10
106	15
107	0
108	1
109	0
110	0
111	4
112	3
113	3
114	5
115	0
116	0
117	2
118	3
119	0
120	1
121	0
122	0
123	1
124	0
125	0
126	4