A115544 Numbers k such that k^2 is the concatenation of two numbers m and 6*m.

4, 142857142857142857142857142857142858, 285714285714285714285714285714285716, 142857142857142857142857142857142857142857142857142857142857142857142857142858

Offset

1,1

Links

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

Example

4^2 = 1_6.

Crossrefs

Cf. A102567, A106497, A115527 - A115556.

Sequence in context: A266200 A066546 A132653 * A164797 A336587 A336586

Adjacent sequences: A115541 A115542 A115543 * A115545 A115546 A115547

Keyword

nonn,base

Author

Giovanni Resta, Jan 25 2006

Status

approved