Borwein-Choi

[N. J. A. Sloane]

Richard,
if you had looked up the word "Choi" with the "word" search,
you would quickly have found this

%I A055745
%S A055745 1,2,6,10,22,30,42,58,70,78,102,130,190,210,330,462
%N A055745 Square-free numbers not of form ab + bc + ca for 1<=a<=b<=c (probably the list is complete).
%D A055745 J. Borwein and K.-K. S. Choi, On the representations of xy+yz+zx, Experimental Math., 9 (2000), 153-158. [Jonathan Borwein (jborwein at cecm.sfu.ca), choi at cecm.sfu.ca (Stephen Choi)]
%H A055745 <a href="http://www.cecm.sfu.ca/ftp/pub/CECM/Preprints/Dvi/98:119-Borwein-Choi.dvi">Borwein-Choi paper (dvi)</a>
%H A055745 <a href="http://www.cecm.sfu.ca/ftp/pub/CECM/Preprints/Postscript/98:119-Borwein-Choi.ps.gz">Borwein-Choi paper (ps)</a>
%Y A055745 Cf. A034168, A025052, A034169.
%K A055745 nonn,fini,nice
%O A055745 1,2
%A A055745 njas

which has pointers to several related sequences

Neil

 Try the new Integer Sequence WebCam at
    http://www.research.att.com/~njas/sequences/WebCam.html !
 
 Neil J. A. Sloane, njas at research.att.com,
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