A280134 - cp's OEIS frontend

A280134 Number of primes of the form 4(n - k - 1) + 3 where 0 <= k and prime of the form 4k + 3 <= n.

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

[0, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 2, 2, 1, 1, 1, 2, 2, 3, 2, 3, 3, 2, 1, 2, 2, 2, 2, 1, 1, 2, 2, 3, 3, 2, 2, 3, 2, 3, 3, 1, 4, 3, 1, 4, 3, 2, 3, 4, 3, 2, 5, 3, 2, 4, 2, 4, 4, 3, 4, 4, 3, 3, 5, 2, 2, 6, 4, 2, 5, 4, 3, 6, 3, 2, 3, 4, 4, 5, 3, 2, 6, 4, 3, 5, 1, 5, 6, 2, 3, 4, 4, 3, 6, 3, 4, 8, 3, 3, 4, 3, 3, 5, 2, 2, 6, 4, 3, 6, 5]

cp's OEIS Frontend

A280134 Number of primes of the form 4(n - k - 1) + 3 where 0 <= k and prime of the form 4k + 3 <= n.

Table of values

List of values

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

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

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