

A283841


Number of ternary maps f : S X S X S > S on a set S of n elements which can be represented as a superposition of binary maps * : S X S > S (Version 2).


1




OFFSET

1,2


COMMENTS

That is, the number of ternary maps represented either in the form f(x, y, z) = (x ∗ y) ∗ z or in the form f(x, y, z) = x ∗ (y ∗ z).


LINKS



CROSSREFS



KEYWORD

nonn,bref,more


AUTHOR



STATUS

approved



