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%I #4 Mar 30 2012 18:57:04
%S 1,3,1,2,2,11,8,1,7,12,15,15,11,2,24,5,22,37,49,1,60,57,47,29,2,46,2,
%T 36,66,91,5,12,11,1,106,80,42,132,72,149,63,123,7,46,76,96,105,102,86,
%U 56,11,173,101,11,144,21,132,234,57,131
%N Let R(i,j) be the rectangle with antidiagonals 1; 2,3; 4,5,6; ...; each k is an R(i(k),j(k)) and A057056(n)=j(C(n,3)).
%K nonn
%O 3,2
%A _Clark Kimberling_, Jul 30 2000
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