1,1

Table of n, a(n) for n=1..14.

A273043(1)=6, 2^6-1=63, 63=3*3*7, 63 is not squarefree and the square is 3*3=9, the square root being 3.

Cf. A237043 , A282631.

Sequence in context: A088083 A116457 A037155 * A212912 A038944 A124081

Adjacent sequences: A282629 A282630 A282631 * A282633 A282634 A282635

nonn

Robert Price, Feb 19 2017

approved