A383438 - cp's OEIS frontend

A383438 a(n) = Sum_{k=1..n} Product_{p|k, p prime} k/p.

n	a(n)
1	1
2	2
3	3
4	5
5	6
6	12
7	13
8	17
9	20
10	30
11	31
12	55
13	56
14	70
15	85
16	93
17	94
18	148
19	149
20	189
21	210
22	232
23	233
24	329
25	334
26	360
27	369
28	425
29	426
30	1326
31	1327
32	1343
33	1376
34	1410
35	1445
36	1661
37	1662
38	1700
39	1739
40	1899
41	1900
42	3664
43	3665
44	3753
45	3888
46	3934
47	3935
48	4319
49	4326
50	4576
51	4627
52	4731

[1, 2, 3, 5, 6, 12, 13, 17, 20, 30, 31, 55, 56, 70, 85, 93, 94, 148, 149, 189, 210, 232, 233, 329, 334, 360, 369, 425, 426, 1326, 1327, 1343, 1376, 1410, 1445, 1661, 1662, 1700, 1739, 1899, 1900, 3664, 3665, 3753, 3888, 3934, 3935, 4319, 4326, 4576, 4627, 4731]

cp's OEIS Frontend

A383438 a(n) = Sum_{k=1..n} Product_{p|k, p prime} k/p.

Table of values

List of values