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A119528 Determinant of n X n matrix of first n^2 number of trees with n unlabeled nodes (A000055). 1

%I #10 May 18 2013 15:42:45

%S 1,0,7,-7288,210319661226,-28724163065553504725184,

%T -17273218743083166095017987886925095168489136,

%U -3262865955763797132157936566332771517266609360571691111615623236765760

%N Determinant of n X n matrix of first n^2 number of trees with n unlabeled nodes (A000055).

%H Alois P. Heinz, <a href="/A119528/b119528.txt">Table of n, a(n) for n = 1..17</a>

%e a(3) = 7 =

%e |.1..1..1|

%e |.1..2..3|

%e |.6.11.23|.

%Y Cf. A000055, A119493.

%K easy,sign

%O 1,3

%A _Jonathan Vos Post_, May 27 2006

%E More terms from _Alois P. Heinz_, Sep 26 2011

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Last modified March 4 22:06 EST 2024. Contains 370532 sequences. (Running on oeis4.)