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A246881 a(n)=A246880(n) where no k exists such that A246880(n)=A002277(k)*(2*10^(A081677(k-1))+3). 0

%I #37 Oct 17 2014 23:37:51

%S 609,6660999,666666609999999,6666666660999999999,

%T 66666666666666666099999999999999999,

%U 666666666666666666666666609999999999999999999999999,6666666666666666666666666660999999999999999999999999999

%N a(n)=A246880(n) where no k exists such that A246880(n)=A002277(k)*(2*10^(A081677(k-1))+3).

%C For any n there exists a k such that A246880(n)=A002277(k-1)*A173041(k).

%Y Subsequence of A246880.

%K nonn,less,base

%O 1,1

%A _Felix Fröhlich_, Sep 06 2014

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Last modified April 24 11:49 EDT 2024. Contains 371936 sequences. (Running on oeis4.)