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%I #7 Jun 26 2012 12:28:01
%S 1,177148,48828126,1977326744,31381236757,285311670612,1792160394038,
%T 8649804864648,34271896307634,116490258898220,350279478046112,
%U 952809757913928,2384185839843751,5559091947792280,12200509765705830
%N a(n)=sigma_11(2n-1).
%t Table[DivisorSigma[11,2n-1],{n,20}] (* _Harvey P. Dale_, Jun 26 2012 *)
%Y Cf. A013959.
%K nonn
%O 1,2
%A _Benoit Cloitre_, Apr 12 2003
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