A115546 Numbers k such that k^2 is the concatenation of two numbers 6*m and m.

857143, 1714286, 857142857142857142857142857142857142857142857143, 1714285714285714285714285714285714285714285714286

Offset

1,1

Links

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

Example

857143^2 = 734694_122449.

Crossrefs

Cf. A102567, A106497, A115527 - A115556.

Sequence in context: A103913 A151939 A172846 * A233957 A224596 A175279

Adjacent sequences: A115543 A115544 A115545 * A115547 A115548 A115549

Keyword

nonn,base

Author

Giovanni Resta, Jan 25 2006

Extensions

Definition modified by Georg Fischer, Jul 26 2019

Status

approved