A016887 a(n) = (5*n+3)^3.

27, 512, 2197, 5832, 12167, 21952, 35937, 54872, 79507, 110592, 148877, 195112, 250047, 314432, 389017, 474552, 571787, 681472, 804357, 941192, 1092727, 1259712, 1442897, 1643032, 1860867, 2097152, 2352637, 2628072, 2924207, 3241792, 3581577, 3944312

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn
• easy

Links

• Vincenzo Librandi, Table of n, a(n) for n = 0..1000
• Index entries for linear recurrences with constant coefficients, signature (4,-6,4,-1).

Crossrefs

Cf. A000578, A016885.

Programs

Magma

[(5*n+3)^3: n in [0..40]]; // Vincenzo Librandi, May 26 2016

Mathematica

(5 Range[0, 30] + 3)^3 (* or *) LinearRecurrence[{4, -6, 4, -1}, {27, 512, 2197, 5832}, 30] (* Harvey P. Dale, Nov 26 2014 *)
Table[(5 n + 3)^3, {n, 0, 40}] (* Vincenzo Librandi, May 26 2016 *)

Formula

From Ilya Gutkovskiy, May 26 2016: (Start)

O.g.f.: (27 + 404*x + 311*x^2 + 8*x^3)/(1 - x)^4.

E.g.f.: (27 + 485*x + 600*x^2 + 125*x^3)*exp(x). (End)

a(n) = A000578(A016885(n)). - Michel Marcus, May 26 2016