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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.
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%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