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%I M3029 N1228 #12 Oct 20 2015 21:39:09
%S 1,3,16,139,1750,29388,623909
%N Erroneous version of A020554.
%D N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
%H L. Comtet, <a href="/A002718/a002718.pdf">Birecouvrements et birevêtements d’un ensemble fini</a>, Studia Sci. Math. Hungar 3 (1968): 137-152. [Annotated scanned copy. Warning: the table of v(n,k) has errors.]
%K dead
%O 1,2
%A _N. J. A. Sloane_, Oct 20 2015
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