Search: id:A089418
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%I A089418
%S A089418 1,1,0,1,4,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
%N A089418 Number of fixed points in range [A014137(n-1)..A014138(n-1)] of permutation 
               A082333/A082334.
%C A089418 The number of n-node binary trees fixed by the corresponding automorphism(s).
%H A089418 A. Karttunen, <a href="a089408.c.txt">C-program for computing the initial 
               terms of this sequence</a>
%Y A089418 Sequence in context: A050920 A001231 A141150 this_sequence A124856 A061858 
               A005873
%Y A089418 Adjacent sequences: A089415 A089416 A089417 this_sequence A089419 A089420 
               A089421
%K A089418 nonn
%O A089418 0,5
%A A089418 Antti Karttunen (His_Firstname.His_Surname(AT)iki.fi), Nov 29 2003

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