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A119888 Numbers n such that (n,R_n)>1, where R_n=(10^n -1)/9=A002275(n). 1

%I #3 Mar 31 2012 10:26:05

%S 3,6,9,12,15,18,21,22,24,27,30,33,36,39,42,44,45,48,51,54,57,60,63,66,

%T 69,72,75,78,81,84,87,88,90,93,96,99,102,105,108,110,111,114,117,120,

%U 123,126,129,132,134,135,138,141,144,150,153,154

%N Numbers n such that (n,R_n)>1, where R_n=(10^n -1)/9=A002275(n).

%C Includes all multiples of 3 (A008585) and multiples of 11 with coefficients A063450. A special subsequence is A014950.

%Y Cf. A119905.

%K nonn

%O 1,1

%A _Lekraj Beedassy_, Aug 04 2006

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Last modified March 28 12:59 EDT 2024. Contains 371254 sequences. (Running on oeis4.)