A104528 - cp's OEIS frontend

A104528 Numerator of Sum_{k=1..n} 1/tau(k), where tau(k) is the number of divisors function.

n	a(n)
1	1
2	3
3	2
4	7
5	17
6	37
7	43
8	23
9	25
10	53
11	59
12	61
13	67
14	35
15	73
16	377
17	407
18	139
19	149
20	457
21	118
22	487
23	517
24	1049
25	363
26	373
27	383
28	1169
29	1229
30	311
31	163
32	331
33	677
34	173
35	707
36	2141
37	2231
38	569
39	2321
40	4687
41	4867
42	614
43	1273
44	644
45	1303
46	2651
47	2741
48	2759
49	2819
50	2849
51	1447
52	731

[1, 3, 2, 7, 17, 37, 43, 23, 25, 53, 59, 61, 67, 35, 73, 377, 407, 139, 149, 457, 118, 487, 517, 1049, 363, 373, 383, 1169, 1229, 311, 163, 331, 677, 173, 707, 2141, 2231, 569, 2321, 4687, 4867, 614, 1273, 644, 1303, 2651, 2741, 2759, 2819, 2849, 1447, 731]

cp's OEIS Frontend

A104528 Numerator of Sum_{k=1..n} 1/tau(k), where tau(k) is the number of divisors function.

Table of values

List of values