

A283872


Numbers n such that gcd(phi(n), n1) > lambda(n)^2.


0




OFFSET

1,1


COMMENTS

2320690177 is the only 2 < n < 10^11 such that gcd(phi(n),n1) = lambda(n)^2.  Giovanni Resta, Mar 24 2017


LINKS

Table of n, a(n) for n=1..6.


CROSSREFS

Cf. A000010, A002322, A049559, A264012, A283656.
Sequence in context: A234396 A017408 A017528 * A233477 A117631 A022229
Adjacent sequences: A283869 A283870 A283871 * A283873 A283874 A283875


KEYWORD

nonn,more


AUTHOR

Thomas Ordowski and Altug Alkan, Mar 24 2017


EXTENSIONS

a(3)a(6) from Giovanni Resta, Mar 24 2017


STATUS

approved



