A251482 - cp's OEIS frontend

A251482 a(n) = floor(prime(n)/log(n)) + ceiling(prime(n)/log(prime(n))) - 2*n, n >=2.

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

[3, 2, 1, 1, 1, 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 0, 0, -1, 0, -1, 0, 2, 0, 0, -1, -2, -3, 1, 0, 1, 0, 1, 1, 1, 0, 0, 0, 1, -1, 1, 0, -1, -3, 0, 3, 2, 1, 0, 0, -2, 0, 1, 1, 1, -1, -1, -2, -3, -2, 2, 1, -1, -1, 2, 1, 3, 2, 1, 1, 2, 1, 1, 1, 1, 2, 0, 2, 3, 1, 3, 1, 1, 0, 0, 1, 0, -2, -3, -1, 0, 0, 0, -1, -1, 1, -1, 3]

cp's OEIS Frontend

A251482 a(n) = floor(prime(n)/log(n)) + ceiling(prime(n)/log(prime(n))) - 2*n, n >=2.

Table of values

List of values

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

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

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