A064404 - cp's OEIS frontend

A064404 When the numerator - denominator (A064169) in n-th harmonic number is prime.

n	a(n)
1	3
2	4
3	6
4	7
5	10
6	19
7	20
8	26
9	30
10	31
11	33
12	40
13	63
14	85
15	92
16	100
17	126
18	131
19	185
20	196
21	200
22	204
23	242
24	246
25	272
26	274
27	282
28	379
29	553
30	572
31	654
32	777
33	902
34	1100
35	1216
36	1225
37	1236
38	1316
39	1413
40	1658
41	1943
42	2077
43	2086
44	2744
45	2746
46	2856
47	2860
48	3518
49	3718
50	4184
51	4189
52	4363

[3, 4, 6, 7, 10, 19, 20, 26, 30, 31, 33, 40, 63, 85, 92, 100, 126, 131, 185, 196, 200, 204, 242, 246, 272, 274, 282, 379, 553, 572, 654, 777, 902, 1100, 1216, 1225, 1236, 1316, 1413, 1658, 1943, 2077, 2086, 2744, 2746, 2856, 2860, 3518, 3718, 4184, 4189, 4363]

cp's OEIS Frontend

A064404 When the numerator - denominator (A064169) in n-th harmonic number is prime.

Table of values

List of values