Search: id:A074763
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%I A074763
%S A074763 2,1,4,4,8,10,20,34,60,100,188,348,632,1162,2192,4114,7712,14542,27596,
%T A074763 52480,99880,190558,364724,699248,1342184,2580796,4971068,9587560,
%U A074763 18512792,35790376,69273668,134219794,260301176,505286416,981706832
%N A074763 1/n*Sum_{d divides n} (-1)^(n+d)*phi(n/d)*2^d.
%Y A074763 Cf. A000010, A000031, A038063.
%Y A074763 Sequence in context: A077967 A008312 A060723 this_sequence A099932 A008346 
               A119282
%Y A074763 Adjacent sequences: A074760 A074761 A074762 this_sequence A074764 A074765 
               A074766
%K A074763 nonn
%O A074763 1,1
%A A074763 Vladeta Jovovic (vladeta(AT)eunet.rs), Sep 06 2002

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