Search: id:A138650
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%I A138650
%S A138650 1,1,1,1,1,2,1,1,2,1,4,1,1,2,2,4,4,6,1,1,2,2,4,1,8,7,2,11,9,1,1,2,2,4,
               2,
%T A138650 8,7,6,5,21,11,9,24,12,1
%N A138650 Table where T(n,k) is the number of unordered trees with n edges (n+1 
               nodes) whose node out-degrees form the k-th partition of the integer 
               n (in Mathematica order).
%e A138650 For the partition [2,1^2] (a(10)=T(4,4)) there are the four trees:
%e A138650 ..o.....o.....o.....o
%e A138650 ./.\.../.\....|.....|
%e A138650 o...o.o...o...o.....o
%e A138650 |...|.|....../.\....|
%e A138650 o...o.o.....o...o...o
%e A138650 ......|.....|....../.\
%e A138650 ......o.....o.....o...o
%Y A138650 Cf. A000041 (row lengths), A000081 (row sums), A125181.
%Y A138650 Sequence in context: A046067 A132066 A102190 this_sequence A137843 A130194 
               A113926
%Y A138650 Adjacent sequences: A138647 A138648 A138649 this_sequence A138651 A138652 
               A138653
%K A138650 more,nonn,tabf
%O A138650 0,6
%A A138650 Franklin T. Adams-Watters (FrankTAW(AT)Netscape.net), May 15 2008

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