%I A053494
%S A053494 1,26,348,2698,14751,62781,222190,681460,1865715,4655535,10756921,
%T A053494 23290026,47700173,93104473,174248451,314246511,548380980,929209095,
%U A053494 1533389605,2470568045,3894914166,6019752376,9136114923,13635769173
%N A053494 G.f.: (1+21*x+222*x^2+1082*x^3+3133*x^4+5722*x^5+7013*x^6+5722*x^7+3133*x^8+1082*x^9+222*x^10+21*x^11+x^12)/
               ((1-x)^11*(1+x)^6).
%D A053494 R. P. Stanley, Enumerative Combinatorics, Wadsworth, Vol. 1, 1986; see 
               Prop. 4.6.21, p. 235, G_5(lambda).
%Y A053494 Cf. A019298, A053494.
%Y A053494 Sequence in context: A126919 A035708 A042306 this_sequence A054938 A010978 
               A022590
%Y A053494 Adjacent sequences: A053491 A053492 A053493 this_sequence A053495 A053496 
               A053497
%K A053494 nonn
%O A053494 0,2
%A A053494 N. J. A. Sloane (njas(AT)research.att.com), Jan 15 2000