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

5, 31, 42, 111, 70, 258, 106, 329, 235, 410, 202, 930, 262, 602, 612, 931, 406, 1373, 490, 1518, 948, 1106, 682, 2802, 957, 1418, 1364, 2274, 1030, 3540, 1162, 2715, 1860, 2162, 1940, 5097, 1606, 2594, 2436, 4882, 1942, 5316, 2122, 4290, 3986, 3578, 2506

Offset

1,1

Comments

Row 3 of A162663.

Links

Table of n, a(n) for n=1..47.

Mathematica

Table[DivisorSigma[2, n]+3DivisorSigma[1, n]DivisorSigma[0, n]+ DivisorSigma[ 0, n]^3, {n, 50}] (* Harvey P. Dale, Jun 22 2013 *)

Crossrefs

Cf. A000005, A000203, A001157, A162663.

Sequence in context: A166306 A341632 A287300 * A130474 A238674 A245523

Adjacent sequences: A162662 A162663 A162664 * A162666 A162667 A162668

Keyword

nonn

Author

Franklin T. Adams-Watters, Jul 09 2009

Status

approved