%I A000654 M2173 N0868
%S A000654 2,52,142090700,17844701940501123640681816160
%N A000654 Invertible Boolean functions of n variables.
%D A000654 C. S. Lorens, Invertible Boolean functions, IEEE Trans. Electron. Computers, 
               EC-13 (1964), 529-541.
%D A000654 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 
               (includes this sequence).
%D A000654 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%H A000654 <a href="Sindx_Bo.html#Boolean">Index entries for sequences related to 
               Boolean functions</a>
%Y A000654 Sequence in context: A057106 A080973 A079179 this_sequence A061306 A139841 
               A167771
%Y A000654 Adjacent sequences: A000651 A000652 A000653 this_sequence A000655 A000656 
               A000657
%K A000654 nonn
%O A000654 1,1
%A A000654 N. J. A. Sloane (njas(AT)research.att.com).