A090541 - cp's OEIS frontend

A090541 a(n) = floor((Sum_{r=1..n} r)*(Sum_{r=1..n} 1/r)).

n	a(n)
1	1
2	4
3	11
4	20
5	34
6	51
7	72
8	97
9	127
10	161
11	199
12	242
13	289
14	341
15	398
16	459
17	526
18	597
19	674
20	755
21	842
22	933
23	1030
24	1132
25	1240
26	1352
27	1470
28	1594
29	1723
30	1857
31	1997
32	2142
33	2293
34	2450
35	2612
36	2780
37	2953
38	3132
39	3317
40	3508
41	3704
42	3907
43	4115
44	4328
45	4548
46	4774
47	5006
48	5243

[1, 4, 11, 20, 34, 51, 72, 97, 127, 161, 199, 242, 289, 341, 398, 459, 526, 597, 674, 755, 842, 933, 1030, 1132, 1240, 1352, 1470, 1594, 1723, 1857, 1997, 2142, 2293, 2450, 2612, 2780, 2953, 3132, 3317, 3508, 3704, 3907, 4115, 4328, 4548, 4774, 5006, 5243]

cp's OEIS Frontend

A090541 a(n) = floor((Sum_{r=1..n} r)*(Sum_{r=1..n} 1/r)).

Table of values

List of values