

A276108


Numbers expressible as perfect powers in a composite number of ways.


0




OFFSET

1,2


COMMENTS

Old title was "Values of A117453(n) such that A175066(n) is not a prime number."
Terms are 1, 2^16, 3^16, 2^36, ...
Numbers m^k, where m is not a perfect power and k is a composite number in A154893 or 0.  Charlie Neder, Mar 02 2019


LINKS

Table of n, a(n) for n=1..4.


EXAMPLE

65536 = 2^16 is a term because there are 4 corresponding ways that are 2^16, 4^8, 16^4, 256^2.


CROSSREFS

Cf. A117453, A154893, A175066.
Sequence in context: A017696 A211199 A010804 * A030635 A236224 A016964
Adjacent sequences: A276105 A276106 A276107 * A276109 A276110 A276111


KEYWORD

nonn,more


AUTHOR

Altug Alkan, Aug 27 2016


EXTENSIONS

New title from Charlie Neder, Mar 04 2019


STATUS

approved



