A172190 a(n) = 2*prime(n)^3.

16, 54, 250, 686, 2662, 4394, 9826, 13718, 24334, 48778, 59582, 101306, 137842, 159014, 207646, 297754, 410758, 453962, 601526, 715822, 778034, 986078, 1143574, 1409938, 1825346, 2060602, 2185454, 2450086, 2590058, 2885794, 4096766

Offset: 1

Author

Vincenzo Librandi, Jan 29 2010

Keywords

• nonn
• easy

Links

• Vincenzo Librandi, Table of n, a(n) for n = 1..1000

Crossrefs

Cf. A000040, A030078.

Programs

Magma

[2*p^3: p in PrimesUpTo(200)]; // Vincenzo Librandi, Mar 27 2014

Mathematica

2Prime[Range[50]]^3 (* Vincenzo Librandi, Mar 27 2014 *)

SageMath

[2*nth_prime(n)^3 for n in (1..50)] # G. C. Greubel, Apr 28 2022

Formula

a(n) = 2*A030078(n).

Extensions

Definition clarified by Jon E. Schoenfield, Jun 18 2010