A034786 - OEIS

%I #5 Jul 10 2011 18:41:18

%S 1,1,1,2,3,7,12,31,59,161,329,944,2067,6148,14558,44483,116372

%N Number of linearly ordered Girard monoids of size n; number of t-norms on an n-chain inducing an involutive residual negator.

%D M. Nachtegael, The Dizzy Number of Fuzzy Implication Operators on Finite Chains, in "Fuzzy Logic and Intelligent Technologies for Nuclear Science and Industry", ed. Ruan D., Abderrahim H., D'hondt P., Kerre E., 1998, pp. 29-35.

%H <a href="/index/Mo#monoids">Index entries for sequences related to monoids</a>

%Y Cf. A030453.

%K nonn

%O 1,4

%A Bernard De Baets (Bernard.DeBaets(AT)rug.ac.be), Mike Nachtegael (mike.nachtegael(AT)rug.ac.be)