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A115542 Numbers n such that the square of n is the concatenation of two numbers m and 5*m. 0
7142857142857142857143, 14285714285714285714286, 21428571428571428571429, 730337078651685393258426966292134831460674157303370786517 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

EXAMPLE

7142857142857142857143^2 = 5102040816326530612245_1020408163265306122449.

CROSSREFS

Cf. A102567, A106497, A115527 - A115556.

Sequence in context: A092118 A037017 A187716 * A171265 A095440 A162033

Adjacent sequences:  A115539 A115540 A115541 * A115543 A115544 A115545

KEYWORD

nonn,base

AUTHOR

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

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Last modified February 15 23:53 EST 2012. Contains 205860 sequences.