A220492 - cp's OEIS frontend

A220492 Number of primes p between quarter-squares, Q(n) < p <= Q(n+1), where Q(n) = A002620(n).

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

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

cp's OEIS Frontend

A220492 Number of primes p between quarter-squares, Q(n) < p <= Q(n+1), where Q(n) = A002620(n).

Table of values

List of values

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

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

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