%I
%S 0,0,0,1,2,4,7,8,14,13,24,19,33,26,48,32,60,41,75,49,92,58,109,66,127,
%T 76,146,88,168,96,184,106,212,122,227,126,263,140,271,158,304,163,326,
%U 175,363,196,366,198,425,212,416,240,474,238,488,250,528,284
%N Number of (w,x,y,z) with all terms in {1,...,n} and 2wx+yz=n.
%C For a guide to related sequences, see A211795.
%t t = Compile[{{n, _Integer}}, Module[{s = 0},
%t (Do[If[2 w*x + y*z == n, s = s + 1],
%t {w, 1, #}, {x, 1, #}, {y, 1, #}, {z, 1, #}] &[n]; s)]];
%t Map[t[#] &, Range[0, 60]] (* A212243 *)
%t (* _Peter J. C. Moses_, Apr 13 2012 *)
%Y Cf. A211795.
%K nonn
%O 0,5
%A _Clark Kimberling_, May 08 2012
