A049847 - cp's OEIS frontend

A049847 a(n) = (2n + 1 - prevprime(2n+1))/2.

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

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

cp's OEIS Frontend

A049847 a(n) = (2n + 1 - prevprime(2n+1))/2.

Table of values

List of values

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

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

cp's OEIS Frontend

A049847 a(n) = (2*n + 1 - prevprime(2*n+1))/2.

Table of values

List of values

A049847 a(n) = (2n + 1 - prevprime(2n+1))/2.

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