A114021 - cp's OEIS frontend

A114021 Number of semiprimes between n and n + sqrt(n).

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

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

cp's OEIS Frontend

A114021 Number of semiprimes between n and n + sqrt(n).

Table of values

List of values

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

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

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