%I A000157 M1818 N0721
%S A000157 1,2,7,111,308063,100126976263592
%N A000157 Number of Boolean functions of n variables.
%D A000157 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%D A000157 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 
               (includes this sequence).
%D A000157 M. A. Harrison, Introduction to Switching and Automata Theory. McGraw 
               Hill, NY, 1965, p. 153 (divided by 2).
%H A000157 <a href="Sindx_Bo.html#Boolean">Index entries for sequences related to 
               Boolean functions</a>
%Y A000157 Sequence in context: A162634 A072664 A045310 this_sequence A034902 A101429 
               A070521
%Y A000157 Adjacent sequences: A000154 A000155 A000156 this_sequence A000158 A000159 
               A000160
%K A000157 nonn
%O A000157 1,2
%A A000157 N. J. A. Sloane (njas(AT)research.att.com).