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%I #3 Mar 30 2012 18:38:14
%S 5,4,11,5,71,7
%N The pairs (x,y) such that x^2 = 1+factorial(y).
%C The main entry for this relation is the bisection in A146968.
%e 71^2 = 7!+1, which introduces (71,7) into the sequence.
%K nonn,less
%O 1,1
%A _Vincenzo Librandi_, Jul 30 2009
%E Reference to main sequence added by _R. J. Mathar_, Aug 02 2009
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