A115532 Numbers k such that k^2 is the concatenation of two numbers m and 3*m.

2857142857142857142857142857142858, 4285714285714285714285714285714287, 5714285714285714285714285714285716, 19354838709677419354838709677419354838709677419354838709678

Offset

1,1

Links

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

Crossrefs

Cf. A102567, A106497, A115527 - A115556.

Sequence in context: A115531 A095460 A083103 * A074194 A135386 A378477

Adjacent sequences: A115529 A115530 A115531 * A115533 A115534 A115535

Keyword

nonn,base

Author

Giovanni Resta, Jan 25 2006

Status

approved