A277577 - cp's OEIS frontend

A277577 a(n) is the number of primes of the form (6n+3) +/- 3^k +/- 1, 1<=k<(t-2) and t is the number of digits of (6n+3)'s balanced ternary representation.

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

[4, 7, 7, 6, 6, 6, 9, 8, 8, 8, 9, 8, 8, 7, 6, 9, 8, 8, 5, 8, 9, 8, 10, 9, 10, 9, 9, 9, 8, 10, 11, 8, 10, 7, 6, 8, 8, 11, 9, 7, 8, 9, 8, 10, 9, 10, 8, 7, 5, 8, 10, 6, 10, 5, 5, 10, 7, 9, 9, 9, 8, 12, 10, 8, 11, 10, 9, 10, 10, 9, 11, 11, 12, 8, 8, 11, 10, 9, 9, 10, 10, 10, 8, 7, 12, 10, 8, 8, 8, 7, 9, 6, 9, 11, 10, 11, 8, 11, 10, 11, 9, 10, 10, 9, 8, 10, 11, 11, 8, 9, 9]

cp's OEIS Frontend

A277577 a(n) is the number of primes of the form (6n+3) +/- 3^k +/- 1, 1<=k<(t-2) and t is the number of digits of (6n+3)'s balanced ternary representation.

Table of values

List of values

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

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

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