A017030 a(n) = (7*n + 4)^2.

16, 121, 324, 625, 1024, 1521, 2116, 2809, 3600, 4489, 5476, 6561, 7744, 9025, 10404, 11881, 13456, 15129, 16900, 18769, 20736, 22801, 24964, 27225, 29584, 32041, 34596, 37249, 40000, 42849, 45796

Offset

0,1

Links

Vincenzo Librandi, Table of n, a(n) for n = 0..10000

Index entries for linear recurrences with constant coefficients, signature (3,-3,1).

Formula

a(n) = A017029(n)^2. - Michel Marcus, Nov 11 2013

Maple

A017030:=n->(7*n+4)^2; seq(A017030(n), n=0..100); # Wesley Ivan Hurt, Nov 11 2013

Mathematica

Table[(7n+4)^2, {n, 0, 100}] (* Wesley Ivan Hurt, Nov 11 2013 *)
LinearRecurrence[{3, -3, 1}, {16, 121, 324}, 40] (* Harvey P. Dale, May 25 2019 *)

Prog

(Magma) [(7*n+4)^2: n in [0..40] ]; // Vincenzo Librandi, Jul 16 2011
(PARI) a(n)=(7*n+4)^2 \\ Charles R Greathouse IV, Jun 17 2017

Crossrefs

Sequence in context: A135794 A161851 A171584 * A082921 A191902 A294140

Adjacent sequences: A017027 A017028 A017029 * A017031 A017032 A017033

Keyword

nonn,easy

Author

N. J. A. Sloane

Status

approved