A056903 - cp's OEIS frontend

A056903 Numbers n such that the numerator of the rational number 1 + 1/2 + 1/3 + ... + 1/n is a prime number.

n	a(n)
1	2
2	3
3	5
4	8
5	9
6	21
7	26
8	41
9	56
10	62
11	69
12	79
13	89
14	91
15	122
16	127
17	143
18	167
19	201
20	230
21	247
22	252
23	290
24	349
25	376
26	459
27	489
28	492
29	516
30	662
31	687
32	714
33	771
34	932
35	944
36	1061
37	1281
38	1352
39	1489
40	1730
41	1969
42	2012
43	2116
44	2457
45	2663
46	2955
47	3083
48	3130
49	3204
50	3359
51	3494
52	3572

[2, 3, 5, 8, 9, 21, 26, 41, 56, 62, 69, 79, 89, 91, 122, 127, 143, 167, 201, 230, 247, 252, 290, 349, 376, 459, 489, 492, 516, 662, 687, 714, 771, 932, 944, 1061, 1281, 1352, 1489, 1730, 1969, 2012, 2116, 2457, 2663, 2955, 3083, 3130, 3204, 3359, 3494, 3572]

cp's OEIS Frontend

A056903 Numbers n such that the numerator of the rational number 1 + 1/2 + 1/3 + ... + 1/n is a prime number.

Table of values

List of values