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A115545 Numbers n such that the concatenation of 6*n with n gives a square. 0
122449, 489796, 122448979591836734693877551020408163265306122449, 489795918367346938775510204081632653061224489796 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

EXAMPLE

734694_122449 = 857143^2.

CROSSREFS

Cf. A102567, A106497, A115527 - A115556.

Sequence in context: A066881 A048903 A185864 * A178476 A104973 A077301

Adjacent sequences:  A115542 A115543 A115544 * A115546 A115547 A115548

KEYWORD

nonn,base

AUTHOR

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

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Last modified February 15 10:56 EST 2012. Contains 205763 sequences.