A074786 - cp's OEIS frontend

A074786 Numbers k such that phi(k) = Sum_{d|k} core(d) where core(x) is the squarefree part of x (A007913).

n	a(n)
1	1
2	99
3	1080
4	1836
5	4743
6	5670
7	7644
8	8307
9	14384
10	14784
11	15225
12	15824
13	16065
14	20300
15	21584
16	25704
17	29760
18	34544
19	46816
20	71568
21	94240
22	128412
23	169290
24	264160
25	266266
26	312480
27	331731
28	364941
29	404550
30	445050
31	454575
32	458052
33	479655
34	497781

[1, 99, 1080, 1836, 4743, 5670, 7644, 8307, 14384, 14784, 15225, 15824, 16065, 20300, 21584, 25704, 29760, 34544, 46816, 71568, 94240, 128412, 169290, 264160, 266266, 312480, 331731, 364941, 404550, 445050, 454575, 458052, 479655, 497781]

cp's OEIS Frontend

A074786 Numbers k such that phi(k) = Sum_{d|k} core(d) where core(x) is the squarefree part of x (A007913).

Table of values

List of values