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%I #5 Sep 07 2015 17:44:39
%S 28087,56174,93623,112348,149815,150967,159159,187246,224695,224696,
%T 299630,299959,301943,318318,318319,337043,374492,449390,449392,
%U 468119,486839,599191,599260,599479,599918,601527,603886,617911,636636,636638
%N Numbers n such that the minimal length of the corresponding shortest addition chain A003313(n)=A003313(7*n).
%H Hugo Pfoertner, <a href="/A116462/b116462.txt">Table of n, a(n) for n = 1..4784</a>
%Y Cf. A115016, A003313 [l(k)], A086878 [l(k)=l(2*k)], A116459 [l(k)=l(3*k], A261986 [l(k)=l(4*k)], A116460 [l(k)=l(5*k)], A116461 [l(k)=l(6*k)], A116463 [l(k)=l(9*k], A117151 [l(k)=l(10*k)].
%K nonn
%O 1,1
%A _Hugo Pfoertner_, Mar 07 2006
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