%I M1932 N0763 #25 Jun 17 2022 14:50:49
%S 1,2,9,37,183,933,5314,32043,207212,1415934,10200289,77018442,
%T 607474564,4987909231,42519634303,375395726926
%N Number of relations on an infinite set.
%C See the lowest row in the table given on top of page 66 in the Oberschelp reference.
%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 W. Oberschelp, <a href="http://gdz.sub.uni-goettingen.de/dms/load/img/?PID=GDZPPN002298732">Kombinatorische Anzahlbestimmungen in Relationen</a>, Math. Ann., 174 (1967), 53-78.
%K nonn,nice,more
%O 0,2
%A _N. J. A. Sloane_
%E More terms from _Vladeta Jovovic_, Jan 10 2000