A289898 - cp's OEIS frontend

A289898 a(n) = floor((2^prime(n+1))/Sum_{k=0|n,2^prime(k)}).

n	a(n)
1	2
2	2
3	2
4	11
5	3
6	12
7	3
8	12
9	59
10	3
11	51
12	15
13	3
14	12
15	59
16	62
17	3
18	51
19	15
20	3
21	50
22	15
23	60
24	251
25	15
26	3
27	12
28	3
29	12
30	15179
31	15
32	60
33	3
34	816
35	3
36	51
37	62
38	15
39	60
40	62
41	3
42	816
43	3
44	12
45	3
46	3226
47	4094
48	15
49	3
50	12
51	59
52	3
53	816
54	63
55	63
56	63
57	3
58	51
59	15
60	3
61	808
62	16363
63	15
64	3
65	12
66	15183

[2, 2, 2, 11, 3, 12, 3, 12, 59, 3, 51, 15, 3, 12, 59, 62, 3, 51, 15, 3, 50, 15, 60, 251, 15, 3, 12, 3, 12, 15179, 15, 60, 3, 816, 3, 51, 62, 15, 60, 62, 3, 816, 3, 12, 3, 3226, 4094, 15, 3, 12, 59, 3, 816, 63, 63, 63, 3, 51, 15, 3, 808, 16363, 15, 3, 12, 15183]

cp's OEIS Frontend

A289898 a(n) = floor((2^prime(n+1))/Sum_{k=0|n,2^prime(k)}).

Table of values

List of values