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%I #5 Apr 29 2019 03:09:17
%S 0,1,3,5,7,12,15
%N Erroneous version of A001318.
%H A. Weil, <a href="http://dx.doi.org/10.5169/seals-46896">Two lectures on number theory, past and present</a>, L'Enseign. Math., XX (1974), 87-110 see p. 98; Oeuvres III, 279-302.
%K dead
%O 0,3