A115545 Numbers k such that the concatenation of 6*k with k gives a square.

122449, 489796, 122448979591836734693877551020408163265306122449, 489795918367346938775510204081632653061224489796

Offset

1,1

Links

Table of n, a(n) for n=1..4.

Example

734694_122449 = 857143^2.

Crossrefs

Cf. A102567, A106497, A115527 - A115556.

Sequence in context: A237793 A185864 A236797 * A224584 A345567 A345822

Adjacent sequences: A115542 A115543 A115544 * A115546 A115547 A115548

Keyword

nonn,base

Author

Giovanni Resta, Jan 25 2006

Status

approved