A261878 - cp's OEIS frontend

A261878 Number of distinct fractional parts of the sums 1/j+...+1/k with 1 <= j <= k <= n, where the fractional part of x is given by x - floor(x).

n	a(n)
1	1
2	2
3	4
4	7
5	11
6	15
7	21
8	28
9	36
10	45
11	55
12	64
13	76
14	89
15	103
16	118
17	134
18	151
19	169
20	187
21	207
22	228
23	250
24	273
25	297
26	322
27	348
28	375
29	403
30	432
31	462
32	493
33	525
34	558
35	592
36	627
37	663
38	700
39	738
40	777
41	817
42	858
43	900
44	943
45	987
46	1032
47	1078
48	1125
49	1173
50	1222
51	1272
52	1323
53	1375
54	1428
55	1482
56	1537
57	1593
58	1650
59	1708
60	1767

[1, 2, 4, 7, 11, 15, 21, 28, 36, 45, 55, 64, 76, 89, 103, 118, 134, 151, 169, 187, 207, 228, 250, 273, 297, 322, 348, 375, 403, 432, 462, 493, 525, 558, 592, 627, 663, 700, 738, 777, 817, 858, 900, 943, 987, 1032, 1078, 1125, 1173, 1222, 1272, 1323, 1375, 1428, 1482, 1537, 1593, 1650, 1708, 1767]

cp's OEIS Frontend

A261878 Number of distinct fractional parts of the sums 1/j+...+1/k with 1 <= j <= k <= n, where the fractional part of x is given by x - floor(x).

Table of values

List of values