A167505 - cp's OEIS frontend

A167505 Number of primes of the form 2^(n-m) 3^m + 1, 0 <= m <= n.

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

[1, 2, 2, 2, 3, 2, 3, 4, 4, 3, 2, 0, 5, 1, 1, 6, 6, 2, 5, 1, 1, 2, 5, 0, 3, 1, 2, 2, 4, 2, 5, 3, 0, 1, 6, 2, 8, 2, 2, 3, 9, 1, 7, 4, 4, 0, 6, 0, 3, 3, 2, 7, 8, 1, 4, 4, 1, 2, 6, 0, 5, 2, 4, 2, 2, 1, 11, 4, 3, 1, 3, 0, 6, 0, 2, 3, 4, 1, 6, 0, 4, 3, 8, 2, 2, 2, 2, 1, 3, 1, 2, 3, 3, 1, 3, 0, 5, 1, 2, 1, 7, 0, 7, 2, 2]

cp's OEIS Frontend

A167505 Number of primes of the form 2^(n-m) 3^m + 1, 0 <= m <= n.

Table of values

List of values

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

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

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