A282632 Square root of the smallest square referenced in A237043 (Numbers n such that 2^n - 1 is not squarefree, but 2^d - 1 is squarefree for every proper divisor d of n.).

3, 5, 7, 11, 17, 31, 23, 1093, 43, 73, 29, 127, 89, 47

Offset: 1

Author

Robert Price, Feb 19 2017

Keywords

• nonn

Examples

			A237043(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.
		

Crossrefs

Cf. A237043, A282631.