A167037 Squares that remain squares when prefixed with a 3.

4225, 30625, 330625, 422500, 3062500, 4515625, 33062500, 42250000, 306250000, 451562500, 953265625, 3306250000, 4225000000, 30625000000, 39451890625, 45156250000, 95326562500, 282891015625, 330625000000, 422500000000, 3062500000000, 3560297265625

Offset

1,1

Links

Chai Wah Wu, Table of n, a(n) for n = 1..1000

Example

4225 = 65^2 is a square and becomes the square 34225 = 185^2 if a 3 is attached in front.

Crossrefs

Sequence in context: A294716 A097226 A202488 * A031563 A031743 A236725

Adjacent sequences: A167034 A167035 A167036 * A167038 A167039 A167040

Keyword

nonn,base

Author

Claudio Meller, Oct 27 2009

Extensions

Keyword:base added by R. J. Mathar, Oct 28 2009

More terms from Chai Wah Wu, Sep 11 2014

Status

approved