A201009 - cp's OEIS frontend

A201009 Numbers m such that the set of distinct prime divisors of m is equal to the set of distinct prime divisors of the arithmetic derivative m'.

n	a(n)
1	1
2	4
3	16
4	27
5	108
6	144
7	256
8	432
9	500
10	784
11	972
12	1323
13	1728
14	2700
15	2916
16	3125
17	3456
18	5292
19	8788
20	11664
21	12500
22	13068
23	15376
24	16875
25	19683
26	20736
27	23328
28	25000
29	27648
30	28125
31	31212
32	34300
33	47916
34	54000
35	57132
36	65536
37	72000
38	78732
39	97556
40	102400
41	103788
42	104544

[1, 4, 16, 27, 108, 144, 256, 432, 500, 784, 972, 1323, 1728, 2700, 2916, 3125, 3456, 5292, 8788, 11664, 12500, 13068, 15376, 16875, 19683, 20736, 23328, 25000, 27648, 28125, 31212, 34300, 47916, 54000, 57132, 65536, 72000, 78732, 97556, 102400, 103788, 104544]

cp's OEIS Frontend

A201009 Numbers m such that the set of distinct prime divisors of m is equal to the set of distinct prime divisors of the arithmetic derivative m'.

Table of values

List of values