A152057 - cp's OEIS frontend

A152057 Sum of the distinct prime factors of 2^n-1.

n	a(n)
0	0
1	0
2	3
3	7
4	8
5	31
6	10
7	127
8	25
9	80
10	45
11	112
12	28
13	8191
14	173
15	189
16	282
17	131071
18	102
19	524287
20	91
21	471
22	798
23	178528
24	286
25	2433
26	10925
27	262737
28	320
29	3425
30	534
31	2147483647
32	65819
33	599598
34	174765
35	123150
36	266
37	616318400
38	699053
39	129646
40	61789
41	164524720
42	5936

[0, 0, 3, 7, 8, 31, 10, 127, 25, 80, 45, 112, 28, 8191, 173, 189, 282, 131071, 102, 524287, 91, 471, 798, 178528, 286, 2433, 10925, 262737, 320, 3425, 534, 2147483647, 65819, 599598, 174765, 123150, 266, 616318400, 699053, 129646, 61789, 164524720, 5936]

cp's OEIS Frontend

A152057 Sum of the distinct prime factors of 2^n-1.

Table of values

List of values