A191225 - cp's OEIS frontend

A191225 Number of Ramanujan primes R_k between triangular numbers T(n-1) < R_k <= T(n).

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

[0, 1, 0, 0, 1, 1, 0, 1, 1, 1, 1, 2, 0, 2, 1, 1, 2, 1, 2, 0, 2, 3, 2, 1, 2, 2, 2, 1, 4, 2, 2, 1, 0, 4, 3, 5, 1, 3, 2, 1, 5, 1, 2, 3, 4, 4, 4, 2, 2, 2, 4, 2, 3, 4, 3, 5, 4, 3, 2, 5, 4, 2, 5, 1, 6, 1, 5, 5, 7, 2, 2, 1, 10, 6, 6, 2, 2, 5, 0, 3, 7, 5, 4, 6, 7, 4]

cp's OEIS Frontend

A191225 Number of Ramanujan primes R_k between triangular numbers T(n-1) < R_k <= T(n).

Table of values

List of values

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

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

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