A172422 - cp's OEIS frontend

A172422 Numbers k that have measure of smoothness J larger than 7, 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	256
2	512
3	1024
4	2048
5	4096
6	6561
7	8192
8	16384
9	19683
10	32768
11	59049
12	65536
13	131072
14	177147
15	262144
16	294912
17	314928
18	331776
19	354294
20	373248
21	390625
22	393216
23	419904
24	442368
25	472392
26	497664
27	524288
28	531441
29	559872
30	589824
31	629856
32	663552
33	708588
34	746496
35	786432

[256, 512, 1024, 2048, 4096, 6561, 8192, 16384, 19683, 32768, 59049, 65536, 131072, 177147, 262144, 294912, 314928, 331776, 354294, 373248, 390625, 393216, 419904, 442368, 472392, 497664, 524288, 531441, 559872, 589824, 629856, 663552, 708588, 746496, 786432]

cp's OEIS Frontend

A172422 Numbers k that have measure of smoothness J larger than 7, 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