6,2

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

Table of n, a(n) for n=6..110.

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

Cf. A087675, A087677.

Sequence in context: A063866 A059106 A318521 * A291207 A058813 A336018

Adjacent sequences: A087673 A087674 A087675 * A087677 A087678 A087679

nonn

N. J. A. Sloane, following a suggestion of Bela Bajnok (bbajnok(AT)gettysburg.edu), Sep 27 2003

approved