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A167037
Squares that remain squares when prefixed with a 3.
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
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
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