A280379 - cp's OEIS frontend

A280379 a(n) = A056171(k) - m, where k=prime(n) and m is the Ramanujan prime index to the greatest Ramanujan prime R(m) <= k.

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

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

cp's OEIS Frontend

A280379 a(n) = A056171(k) - m, where k=prime(n) and m is the Ramanujan prime index to the greatest Ramanujan prime R(m) <= k.

Table of values

List of values

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

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

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