Search: id:A081766
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%I A081766
%S A081766 1,3,8,13,17,30,46,47,68,73,75,93,98,105,112,122,144,155,172,183,189,
%T A081766 192,203,217,233,237,242,254,266,268,269,278,286,294,348,380,401,403,
%U A081766 411,423,437,439,443,456,463,476,483,489,494,498,511,520,526,540,563
%N A081766 Numbers n such that n^2+1 divides C(2n,n).
%Y A081766 Sequence in context: A045188 A022762 A022807 this_sequence A152676 A010064 
               A133330
%Y A081766 Adjacent sequences: A081763 A081764 A081765 this_sequence A081767 A081768 
               A081769
%K A081766 easy,nonn
%O A081766 1,2
%A A081766 Benoit Cloitre (benoit7848c(AT)orange.fr), Apr 09 2003

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