%I #5 Mar 30 2012 16:47:27
%S 0,0,0,0,0,0,1,1,2,3,4,5,7,8,10,12,14,16,19,21,24,27,30,32,35,36,38,
%T 39,40,40,41,40,40,39,38,36,35,32,30,27,24,21,19,16,14,12,10,8,7,5,4,
%U 3,2,1,1,0,0,0,0,0,0,0,0,0,0
%N Number of partitions of n into 3 distinct parts from [ 1,19 ].
%F Coefficient of t^3 in (1+tx)(1+tx^2)(1+tx^3)...(1+tx^19).
%K nonn
%O 0,9
%A _N. J. A. Sloane_.