A088063 a(1) = 1, a(n) = smallest square obtained by prefixing a multiple of n to a(n-1).

1, 81, 19881, 1926419881, 121775642151926419881, 235039690681119003888121775642151926419881, 36607881966437971419803962177283371311043235039690681119003888121775642151926419881

Offset

1,2

Links

Table of n, a(n) for n=1..7.

Example

a(2) = 81, a(3) = 19881 = 141^2 is obtained by prefixing 198 =3*66, to 81.

Crossrefs

Cf. A088064.

Sequence in context: A116007 A013829 A100533 * A017200 A017308 A017428

Adjacent sequences: A088060 A088061 A088062 * A088064 A088065 A088066

Keyword

base,nonn

Author

Amarnath Murthy, Sep 21 2003

Extensions

Corrected and extended by Hans Havermann, Mar 01 2004

Status

approved