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%I #8 Sep 09 2014 00:55:38
%S 1,4,55,2008,153040,20987840,4672874360
%N Erroneous version of A001500.
%D R. C. Read, Some Enumeration Problems in Graph Theory. Ph.D. Dissertation, Department of Mathematics, Univ. London, 1958.
%H R. C. Read, <a href="/A002831/a002831.pdf">Letter to N. J. A. Sloane, Feb 04 1971</a>
%Y Cf. A001500.
%K dead
%O 1,2
%A _N. J. A. Sloane_, Sep 09 2014
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