A091815 - cp's OEIS frontend

A091815 Numbers m such that the numerator of Sum_{i=1..m} (i-1)/i is prime.

n	a(n)
1	3
2	4
3	5
4	6
5	7
6	9
7	11
8	13
9	15
10	16
11	17
12	22
13	61
14	69
15	73
16	97
17	120
18	125
19	138
20	141
21	158
22	180
23	183
24	220
25	224
26	317
27	370
28	457
29	517
30	546
31	573
32	648
33	678
34	692
35	699
36	804
37	848
38	1182
39	1213
40	1225
41	1300
42	1866
43	2093
44	2344
45	2411
46	2837
47	3421
48	4888
49	5685
50	6530
51	6788
52	7009
53	7076
54	7465
55	7674
56	7757

[3, 4, 5, 6, 7, 9, 11, 13, 15, 16, 17, 22, 61, 69, 73, 97, 120, 125, 138, 141, 158, 180, 183, 220, 224, 317, 370, 457, 517, 546, 573, 648, 678, 692, 699, 804, 848, 1182, 1213, 1225, 1300, 1866, 2093, 2344, 2411, 2837, 3421, 4888, 5685, 6530, 6788, 7009, 7076, 7465, 7674, 7757]

cp's OEIS Frontend

A091815 Numbers m such that the numerator of Sum_{i=1..m} (i-1)/i is prime.

Table of values

List of values