A283092 The smallest square referenced in A280296 (Squarefree numbers n such that 2^n - 1 is divisible by a square > 1).

9, 49, 9, 9, 9, 9, 9, 49, 121, 9, 9, 961, 9, 9, 9, 9, 49, 9, 529, 9, 49, 9, 961, 9, 9, 9, 49, 9, 9, 49, 9, 9, 9, 9, 961, 9, 49, 529, 9, 9, 9, 9, 9, 1849, 9, 49, 9, 9, 49, 9, 9, 9, 9, 529, 9, 121, 49, 9, 9, 9

Offset: 1

Author

Robert Price, Mar 06 2017

Keywords

• nonn

Examples

			A280296(1)=6, 2^6-1 = 63 = 3*3*7, so 63 is not squarefree the square being 3*3=9.
		

Crossrefs

Cf. A280296, A283245.