A229999 - cp's OEIS frontend

A229999 For every positive integer m, let u(m) = (d(1),d(2),...,d(k)) be the unitary divisors of m. The sequence (a(n)) consists of integers of the form d(k)/d(1) + d(k-1)/d(2) + ... + d(k)/d(1).

n	a(n)
1	1
2	13
3	68
4	170
5	289
6	377
7	1160
8	2105
9	2900
10	4930
11	9425
12	10946
13	19594
14	20740
15	33680
16	51850
17	45385
18	52625
19	69716
20	84200
21	83522
22	88145
23	107848
24	143140
25	269620
26	208520
27	226577
28	273650
29	353800
30	458354
31	521300
32	540985
33	568226
34	884500
35	760328
36	832745
37	876265

[1, 13, 68, 170, 289, 377, 1160, 2105, 2900, 4930, 9425, 10946, 19594, 20740, 33680, 51850, 45385, 52625, 69716, 84200, 83522, 88145, 107848, 143140, 269620, 208520, 226577, 273650, 353800, 458354, 521300, 540985, 568226, 884500, 760328, 832745, 876265]

cp's OEIS Frontend

A229999 For every positive integer m, let u(m) = (d(1),d(2),...,d(k)) be the unitary divisors of m. The sequence (a(n)) consists of integers of the form d(k)/d(1) + d(k-1)/d(2) + ... + d(k)/d(1).

Table of values

List of values