A172420 - cp's OEIS frontend

A172420 Numbers k that have measure of smoothness J larger than 5, where J = log(k)/log(rad(k)) and rad(k) is the product of the distinct prime divisors of k (A007947).

n	a(n)
1	64
2	128
3	256
4	512
5	729
6	1024
7	2048
8	2187
9	4096
10	6561
11	8192
12	8748
13	9216
14	10368
15	11664
16	12288
17	13122
18	13824
19	15552
20	15625
21	16384
22	17496
23	18432
24	19683
25	20736
26	23328
27	24576
28	26244
29	27648
30	31104
31	32768
32	34992
33	36864
34	39366
35	41472
36	46656
37	49152

[64, 128, 256, 512, 729, 1024, 2048, 2187, 4096, 6561, 8192, 8748, 9216, 10368, 11664, 12288, 13122, 13824, 15552, 15625, 16384, 17496, 18432, 19683, 20736, 23328, 24576, 26244, 27648, 31104, 32768, 34992, 36864, 39366, 41472, 46656, 49152]

cp's OEIS Frontend

A172420 Numbers k that have measure of smoothness J larger than 5, where J = log(k)/log(rad(k)) and rad(k) is the product of the distinct prime divisors of k (A007947).

Table of values

List of values