Search: id:A011893
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%I A011893
%S A011893 0,0,0,0,2,5,10,19,30,45,65,90,120,156,198,248,305,370,
%T A011893 445,528,621,725,840,966,1104,1254,1418,1595,1786,1993,
%U A011893 2214,2451,2705,2976,3264,3570,3894,4238,4601,4984,5389
%N A011893 [ n(n-1)(n-2)/11 ].
%Y A011893 Sequence in context: A001936 A127297 A018739 this_sequence A132210 A000098 
               A024827
%Y A011893 Adjacent sequences: A011890 A011891 A011892 this_sequence A011894 A011895 
               A011896
%K A011893 nonn,easy
%O A011893 0,5
%A A011893 N. J. A. Sloane (njas(AT)research.att.com).

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