%I #5 Oct 06 2015 13:59:00
%S 1,1,4,16,544
%N Number of Post functions of n variables which fail to satisfy Post's second condition.
%H R. F. Wheeler, <a href="/A002543/a002543.pdf">Complete propositional connectives</a>, Z. Math. Logik Grundlagen Math. 7 1961 185-198. [Annotated scanned copy]
%H R. F. Wheeler, <a href="/A002543/a002543_2.pdf">An asymptotic formula for the number of complete propositional connectives</a>, Z. Math. Logik Grundlagen Math. 8 (1962),1-4. [Annotated scanned copy]
%Y Equals A002857 - A002543.
%K nonn,more
%O 1,3
%A _N. J. A. Sloane_, Oct 06 2015