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Erroneous version of A002439.
(Formerly M3927 N1615)
0

%I M3927 N1615 #15 Jun 01 2017 23:26:51

%S 1,5,23,1681,257543,67637281,27138236663,15442193173681

%N Erroneous version of A002439.

%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).

%K dead

%O 1,2