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

1, 0, 7, -7288, 210319661226, -28724163065553504725184, -17273218743083166095017987886925095168489136, -3262865955763797132157936566332771517266609360571691111615623236765760

Offset

1,3

Links

Alois P. Heinz, Table of n, a(n) for n = 1..17

Example

a(3) = 7 =
|.1..1..1|
|.1..2..3|
|.6.11.23|.

Crossrefs

Cf. A000055, A119493.

Sequence in context: A158400 A221628 A220879 * A116266 A179812 A023344

Adjacent sequences: A119525 A119526 A119527 * A119529 A119530 A119531

Keyword

easy,sign

Author

Jonathan Vos Post, May 27 2006

Extensions

More terms from Alois P. Heinz, Sep 26 2011

Status

approved