A074110 Largest n-digit squarefree number.

7, 97, 998, 9998, 99998, 999997, 9999998, 99999998, 999999998, 9999999998, 99999999998, 999999999998, 9999999999998, 99999999999998, 999999999999998, 9999999999999998, 99999999999999998, 999999999999999998

Offset

1,1

Links

Table of n, a(n) for n=1..18.

Mathematica

Table[x = 10^n; k = -1; While[! SquareFreeQ[y = x + k], k += -1]; y, {n, 18}] (* Jayanta Basu, Aug 01 2013 *)

Crossrefs

Cf. A074109.

Sequence in context: A003618 A173833 A093172 * A155644 A243867 A232290

Adjacent sequences: A074107 A074108 A074109 * A074111 A074112 A074113

Keyword

base,nonn

Author

Amarnath Murthy, Aug 26 2002

Extensions

More terms from Matthew Conroy, Aug 27 2002

Status

approved