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A115546 Numbers n such that the square of n is the concatenation of two numbers m and 6*m. 0
857143, 1714286, 857142857142857142857142857142857142857142857143, 1714285714285714285714285714285714285714285714286 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

EXAMPLE

857143^2 = 734694_122449.

CROSSREFS

Cf. A102567, A106497, A115527 - A115556.

Sequence in context: A103913 A151939 A172846 * A175279 A166485 A034609

Adjacent sequences:  A115543 A115544 A115545 * A115547 A115548 A115549

KEYWORD

nonn,base

AUTHOR

Giovanni Resta (g.resta(AT)iit.cnr.it), Jan 25 2006

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Last modified February 17 07:41 EST 2012. Contains 205998 sequences.