%I #6 Nov 16 2014 05:47:02
%S -1,12,19,-1,14,-1,28,27,23,33,-1,35,-1,26,-1,45,44,44,43,29,51,-1,54,
%T -1,53,-1,32,-1,66,65,65,64,64,63,46,73,-1,77,-1,76,-1,75,-1,50,-1
%N Triangle of 2-color Rado numbers R(k,n), n >= 4, 1 <= k <= n-3, for the equation x + y + k = n*z, writing -1 instead of infinity.
%H S. Jones and D. Schaal, <a href="http://dx.doi.org/10.1016/j.disc.2004.06.022">Two-color Rado numbers for x + y + z = kz</a>, Discr. Math., 289 (2004), 63-69.
%e Triangle begins:
%e -1
%e 12 19
%e -1 14 -1
%e 28 27 23 33
%e -1 35 -1 26 -1
%e 45 44 44 43 29 51
%e ...
%K sign,tabl
%O 4,2
%A _N. J. A. Sloane_, Dec 31 2004