1,1

a(10) ~= 2.767*10^155 is too large to show here.

It is conjectured that an integer is always reached if the initial value is >= 2.

Table of n, a(n) for n=1..9.

J. C. Lagarias and N. J. A. Sloane, Approximate squaring (pdf, ps), Experimental Math., 13 (2004), 113-128.

Cf. A087669 (steps to reach an integer), A087666.

Sequence in context: A087368 A309740 A280035 * A271390 A138584 A277995

Adjacent sequences: A087667 A087668 A087669 * A087671 A087672 A087673

nonn

N. J. A. Sloane, Sep 27 2003

approved