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A162665 a(n) = sigma_2(n) + 3 sigma(n) tau(n) + tau(n)^3. 1

%I

%S 5,31,42,111,70,258,106,329,235,410,202,930,262,602,612,931,406,1373,

%T 490,1518,948,1106,682,2802,957,1418,1364,2274,1030,3540,1162,2715,

%U 1860,2162,1940,5097,1606,2594,2436,4882,1942,5316,2122,4290,3986,3578,2506

%N a(n) = sigma_2(n) + 3 sigma(n) tau(n) + tau(n)^3.

%C Row 3 of A162663.

%t Table[DivisorSigma[2,n]+3DivisorSigma[1,n]DivisorSigma[0,n]+ DivisorSigma[ 0,n]^3,{n,50}] (* _Harvey P. Dale_, Jun 22 2013 *)

%Y Cf. A000005, A000203, A001157, A162663.

%K nonn

%O 1,1

%A _Franklin T. Adams-Watters_, Jul 09 2009

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Last modified June 17 13:12 EDT 2021. Contains 345080 sequences. (Running on oeis4.)