A172421 - cp's OEIS frontend

A172421 Numbers k that have measure of smoothness J larger than 6, 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	128
2	256
3	512
4	1024
5	2048
6	2187
7	4096
8	6561
9	8192
10	16384
11	19683
12	32768
13	49152
14	52488
15	55296
16	59049
17	62208
18	65536
19	69984
20	73728
21	78125
22	78732
23	82944
24	93312
25	98304
26	104976
27	110592
28	118098
29	124416
30	131072
31	139968
32	147456
33	157464
34	165888
35	177147
36	186624
37	196608

[128, 256, 512, 1024, 2048, 2187, 4096, 6561, 8192, 16384, 19683, 32768, 49152, 52488, 55296, 59049, 62208, 65536, 69984, 73728, 78125, 78732, 82944, 93312, 98304, 104976, 110592, 118098, 124416, 131072, 139968, 147456, 157464, 165888, 177147, 186624, 196608]

cp's OEIS Frontend

A172421 Numbers k that have measure of smoothness J larger than 6, 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