

A329712


The number of rooted chains in the lattice of (0, 1) matrices of order n.


0



1, 2, 150, 14174522, 10631309363962710, 213394730876951551651166996282, 288398561903310939256721956218813835167026180310, 55313586130829865212025793302979452922870356482030868613037427298852922
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OFFSET

0,2


COMMENTS

Also, the number of n X n distinct rooted fuzzy matrices.
The number of chains in the power set of n^2elements such that the first term of the chains is either an empty set or a set of n^2elements.
The number of chains in the collection of all binary (crisp or Boolean or logical) matrices of order n such that the first term of the chains is either null matrix or unit matrix.


LINKS

V. Murali and B. Makamba, Finite Fuzzy Sets, Int. J. Gen. Syst., Vol. 34 (1) (2005), pp. 6175.


FORMULA



CROSSREFS



KEYWORD

nonn


AUTHOR



STATUS

approved



